lol, how is a show about three yakuza members having their dicks chopped off and being forced to work as idol stars "kiddy weirdo faggot shit"? Back Street Girls is a crude, kinda dumb adult comedy about rape jokes, gender inequities, and struggling to pee standing up, little more. If anything it mocks idol fans and identity politics. It's not sexualized anymore than that South Park Jewish kid's dad identifying as a dolphin is sexualized, if you see it as fan service there's something wrong with you m8.
I can see a lot of reasons that one wouldn't like KF/Kemurikusa but I don't really understand the BPD criticism, if anything the 3DCG forces adherence to a very consistent animation style, since to deviate from the models ("noodly-armed flailing and big head/tiny body screaming") would require added effort. I don't know that I'd call the humor ironic, but it can be meta in a sense (subverted expectations), so I guess I get that. They're both more about the relaxing ambiance/atmosphere for me if anything tbh.
The "endless school girl/maid/sexualized 12 year old with a harem of big boobed cat women/incest tropes" pretty much died by the late 00s. The handful of shows like that that still get made are not very popular and you basically have to be seeking them out to find them. In any case I get the general perspective, I felt the same way until relatively recently (2013) when I began getting back into it. I was a Toonami kid that started with the typical DBZ action stuff, got into the more serious/"mature" Cowboy Bebop and whatnot, and then abandoned it when weebs began infesting all my gaming forums. I remember making a post on this forum several years ago along the lines of "The day I begin masturbating to hentai is the day I kill myself", and I've been waiting disappointed that no one has tried throwing that one back in my face.
What are your top anime btw?