I mean no hate on anyone for having a fetish but I agree. Tbh, one of the reasons I like hentai is not for the anime/art style aspect (I don't even watch anime and it's a struggle trying to keep up with context with these characters, lol). It's just because it's drawn and there's no possible exploitation. I still do watch porn but I try and stay away from studios as much as possible.
Anyway that's relevant because for me I want it to have at least some form of connection to reality in it, a lot of hentai doesn't (why impossibly huge futa dicks don't get me off much either lol).
I don't think there's much of a shift though tbh. Hentai has always been really "out there" and exaggerated since the beginning. You just have to look for good stuff and be discerning. And as you say it is annoying that small tit hentai is almost exclusively loli or at least questionable.
not sure how big this instance is gonna get, but gonewildaudio is one of my favourite subreddits. I actually have no idea what's going to happen to that subreddit if they decide to not reopen. Because that really was a unique place, most of the rest of the content you can find elsewhere but I genuinely have no idea where to find that kind of stuff if not for reddit.
usually what happens with me and cnc is like fucking love it whilst watching, but then I think of the unfortunate implications afterwards... its why hentai/drawn stuff is nice because at the end of the day you know nobody was coerced/pressured/forced to do it because they have no money otherwise.