i.. don't even think i've ever interacted with the fandom in its classical sense, haha. i just passively created content and responded to people who either were leaving comments or were kindly making the first steps to talk to me on twitter or RS. that's how i've met the most of the adashuada people i know, tbh :'>
(i tried interacting with fandom as a group on discord but felt ve-e-ery out of place in a real-time group setting.)

basically, i don't really have much first-hand experience of the fandom in the first place. but that said, i have been hearing about the adashuada fandom spaces lately leaving a bad taste in the mouths of the several people i know and trust. apparently, some folks are outright rude, others are narcissistically attention-seeking, others are very dismissive of creative endeavors of fellow fandom-dwellers... i would say that this is a 'decline' but honestly - that's the result of any sort of group growing bigger and attracting enough people for there to be assholes too. a natural order of things, i guess.

speaking of interacting with fandom content rather than people: something i already brought up once is the current focus on shuada compared to adashu. now, i don't think that "roles" are something that should ever spark conflict in fandom spaces. and frankly, my understanding of my favorite m/m ships has always been along the lines of "these are 2 guys. no one has to be a 'man' or a 'woman'. their bond should be its own thing. and it's my job as a fan to figure out what exactly their relationship would look like in these X thousands of words". this mindset applied to adashuada for me as well bc the pre-2020 fics with massively feminized Yu didn't really feel.. right to me. no idea if i succeeded at all but what i wanted to create for these 2 in my head was a more or less equal relationship between 2 guys, with both Yu and Adachi having room to be gentle, detached, independent, needy, horny, bashful, persistent, inert, etecetera. after all, emotions and behaviors are universal and, imo, should be tied to context and situations rather than "roles". otherwise, it's simply gender-stereotypes.

but getting back to the point, what i want to say is: i feel like the gears shifted 180 degrees in the past ~3 years or so, and now it's Adachi's turn to be a 'babygirl' in the relationship. i hate the word 'fetishize' and heck, i do love everything related to femininity, so all sorts of fem-related kinks don't necessarily rub me the wrong way. but i also do want my m/m ships to stay more or less true to their canon selves and not "play" a forced heterosexual couple. seeing Adachi now constantly and widely bear the brunt of delivering 'sexy fem kinks' is just kinda.. sad to me, i guess.

it's all about personal preferences to having and not having fun, though. and of course, everyone has the right to have fun the way they like. so simply in the scope of this answer: i do feel like 'babygirlifying' Adachi is something that has been a more recent trend and i, personally, am not a fan of it. still, the times of babygirlified Yu's weren't perfect either. i just wish we maintained some balance :'>

thanks so much for the question and thanks for enjoying my adashuada fics~