After reading up on the Hifuu Club lore I certainly agree with the video saying this is just a way for ZUN to put out his thoughts. Nah I'm just kidding it's more than just that, but with how much the world is pretty much built as what ZUN might imagine a distopian future to be I can't help but think that way about it. It's like a world where humans just "figured it out" and most are now able to live in relative luxury thanks to increase in scientific discoveries that drastically improves quality of life to the point diseases are sort of a think of the past. But no matter how much it is insisted that this is a distopian future I can't help but think it's actually a better future with how life has improved but at the cost of how 'real' things are and the lack of needing to discover anything new.
So much food is artificial like bamboo shoots, eggs, and strawberries (and probably more) but you still gotta ask, is it really that bad? If it tastes the same, looks the same, behaves the same, with the only difference is that it was grown in a lab or something, does it really matter? If such methods would actually be more cost and space efficient while also not having negative side effects, wouldn't that be a net positive if you consider how much animals are kept in pens only for their parts and other produces to be harvested and how much land is being used to produce crops. I've never eaten anything artificial before in my life and heck they're probably more expensive now compare to just buying the real stuff, but in a future where more efficient ways of producing them are found and are way cheaper it would be the optimal choice to go for them. But then again it feels weird eating something that tastes and looks the same as something else despite not really being it, like, imagine eating mantis shrimp where there is so little meat compared to the exoskeletons that are just thrown away (heck you probably paid more for the carapace than the meat itself), but if you can make the meat artificial and even increase the volume wouldn't that be better? But still there is still a lingering feeling I would have knowing all this is just lab grown whateverthefucks.
Speaking of artificial, the whole 53 min shinkansen ride is pretty impressive if it were a real thing, like getting from one side of the country to another in that speed is so beneficial it's makes me wonder what's so bad about it. Well the tunnel of said underground shinkansen is actually one straight line and in order to do that they had to tunnel under Mt.Fuji and they had to go through a load of hooplas to change Mt.Fuji into an extinct volcano. Oh and they also dug through suicide forest but not disclose it to the puclic for obvious reasons... Okay now those are pretty scary stuff, like going underneath a volcano (they classified it as extinct but who know if it is safe or not since it is obviously just so they can get the greenlights for the construction) and who knows how much ghosts you're gonna piss off going underneath aokigahara. But still though that kind of high speed transportation has so much benefits for everyone it almost out weights the potential cons. But the highlight of the trip was the panoramic windows the hides the fact that the real ride is underground and the real world above is nowhere better. But still ignoring the very fake outside view, it still is a benefit to make life better, even if there is no fake view i imagine people would still take it due to how convenient it is despite looking so barren and dead without the fake outside views.
But aside from the artificial stuff, it seems that the world of the Hifuu Club is one where rationality and truth are valued above all else and anything that can't be explained through science is considered to be false. And in a world where rationality is placed at such high regards and the means of accessing information is so readily available it pretty much killed creativity and ZUN really emphasizes that part, a world so rational that all the old beliefs tied to religions, myth, and folklores have been ignored (but no necessarily forgotten). ZUN used a term something along the lines of Japan being the "Graveyard of the gods" or something similar to paint the picture here, Japanese traditions and folklores are so vast and integrated into their lives and getting to the point that it all just get ignored is just sad.
But there is this part about the Torifune station that broke down that carried a bunch of animals that ZUN called a sort of Noah's Ark and in it was a shrine dedicated to a deity of safe travels that was worshipped by people going to space which tells us the old gods and myths were never forgotten, just ignored when they're help was not needed but we still come back to them if the situation requires it.
How I interpret this is not just people forgetting about gods, myths, and folklores because they don't believe in them or their existence have been disproven but rather they were used to explain the unknowns during ancient times, but since humanity has long progressed in technology, we soon find out answers for our questions that doesn't involve the supernatural as was with ZUN's will-o-wisp example. But when it comes to exploring the vast and still somewhat unknown outer space they still pray to a god for safe travels.
And regarding ZUN's vision of a future of rationality with no room for creativity, I actually think we're already here just like what kymoh said.
But I highly doubt we'll completely forget about them, I believe they'll still remain in our consciousness as a form of a meme (yknow the kind the magnet guy in MGR is on about), like me for example who doesn't really believe in the religion in our place but I still understand when they talk about it or joke about it and whether I like it or not, it is undeniable that whatever values I have right now were formed with the help of said religion as everyone around me taught me the same things. And beyond the people around me, medias have also had imageries and themes of that religion so even if I go away from this place I will still see references to it in the games I play and stories I read, and so in a way these creative works are also a way for us to spread our myths, folklores, and culture, just as Touhou increased interest in all things Japanese culture related. So I don't it will be forgotten as in erased from memory but rather just less believers, but the impact they have had on our cultures are so drastic its virtually impossible to get rid of and will be this ever present ideas the our collective consciousnes.
Anyways I've yapped long enough Merry and Renko should've just kissed and be done with it