Interesting thought. However, what is the proof for it? I mean I have personally seen it too in more or less ironic tones being said, but I never really took it seriously. It is basically this situation (cue to An Incorrect Summary of Metal Gear Rising: Revengeance)
My_source_is_that_I_made_it_the_F_up.mp4
Still, interesting point. Alo, despite this coming from Reddit (and a 9 years old thread to add to it), what this person said is not to be ignored:
(original thread: Help me understand ZUN's philosophy https://www.reddit.com/r/touhou/comments/1rhif8/help_me_to_understand_zuns_philosophy/?utm_source=share&utm_medium=web2x&context=3) Back in the days when pirate websites like Moriya Shrine were still seen as justified, ZUN was not even planning to port his games to Steam yet as he was not caring about anything outside Japan, and the first fan-made anime were getting into a bit of trouble with the use of professional voice acting
Meanwhile, there is also this opinion, much more recent, coming from Danbooru (as I was talking about that website in a recent discussion), in the context of a Touhou image that sparked much controversy:
Then, there is this discussion based on a story card from Touhou LostWord which for some reason caught up on Twitter, then was discussed again on Reddit (sometimes, I really need to use any source if it is for research and studying human behaviour):
Alright, now with the actual opinions expressed about the card itself, art and reception:
User 1: I don't know if it's the reason in this particular case but I've seen a lot of people on Twitter who genuinely hate over-sexualisation of Touhou characters, which is really weird to me considering that a massive proportion of fanworks do over-sexualise the characters and that's a pretty big part of why the series is as big as it is (which is ironic considering the art ZUN draws). This game literally wouldn't exist if hordes of degenerates didn't draw mountains of Touhou porn over the last 20 years, increasing attention to the series, and I applaud their service.
User 2 (reply): It’s not that hard to understand why a large portion of fans would hate over-sexualization when you consider that almost all the cannon material is void of sexualization. The only thing I can think of off the top of my head is that promotional Yuugi art by Alphes.
User 3 (reply to User 1): This is quite an overstatement, imo. How many of those people who stumbled across porn as their exclusive first experience of touhou actually ended up supporting the game monetarily? How many people exist that actually had the porn as their first experience in the first place? How many people go spend money on non-porn content due to seeing porn online in general? Considering how many people have seen Bad Apple/U.N. Owen was her and other Touhou related music/video content (especially being featured in a lot of Nico Nico Douga videos), I sincerely find it hard to believe that a majority of consumers came from porn and not the variety of other content on many other websites nor do I believe the porn is high on the list of defining features that contribute towards purchase decisions that result in money that goes towards the game's development (I doubt ZUN sees any of the money from doujin/porn producers and people aren't buying the game for ZUN's attractive art). All of that is to say that the game series has far more qualities to it that far outweigh the porn aspect as far as its success. Saying the touhou series wouldn't exist without porn is like saying that every game and anime wouldn't exist without porn. It's absurdity.
User 4 (reply to User 3): I am personally a degenerate so I whole-heartedly welcome the lewding, but I could see how somebody could dislike the over-sexualization. While l00ds have definitely helped the community grow, I wouldn't go so far as to say that they are a crucial part of the fandom. The mainline games as well as the SFW creative freedom that ZUN promotes is what has shaped the community by and large, and I think those alone could have definitely kept the fandom alive and well, if smaller. Somebody who loves the mainline games and/or characters might not like the franchise getting 'degraded' into just sexy anime women.
User 5 (reply): This, for the most part. It seems to happen with basically every gacha game because the majority of the playerbase is, to put it bluntly, desperately horny. It stands out more here because unlike, say, Fate (which has characters like Nero) and Fire Emblem (ditto Tharja), Touhou has never been a "sexy" series. Hell, it's never even lived in the same town. I have a sex drive as functional as anyone else's and I enjoy a nice rack, but I also realize that I can find more porn on the internet, for free, than I could ever consume in my lifetime, so it doesn't need to be part of my gaming as well. Nobody likes a coomer who can't enjoy anything they can't get off to, and I have a lot of respect for ZUN keeping lewd content decisively out of his games. Seeing it here just feels crass.
At least for now, I am not here to express my opinion on the matter. The materials presented are offered for starting a discussion, and anyone can take whatever they want out of it (after all, we have the right to expressing our opinion). Just let the info sink in...