Big big dislike - BL, like straight romance, can come under so may different genres. Like, if I had a sci-fi that featured a romance subplot between two male protags, I'd want to put it under "sci-fi" and not BL. It causes the same kinds of problems as there being a genre of "queer films."
You could say, "just put it in sci-fi anyway if you're that bothered" and while I personally would - and I would personally use the romance genre rather than the BL genre because I'm gotdang tired of being Othered all the time - that doesn't solve the issue at hand here.
I feel like just having the little BL icons is enough, especially for stories that aren't about the queerness, they're about something completely different and the characters just happen to be gay men. I personally find this REALLY helpful because I don't want to read about straight characters and it definitely makes finding new things to read easier if there's a handy-dandy "this story features a male/male romance!" or an author's note saying "hey it's not explicit in the work but please assume everything and everyone is queer here" because I don't want to get invested in a work and then roll my eyes out of my skull because I have to sit through another hetero love triangle story.
The OTHER big issue I have with this is: it's only BL. Like....y'all know lesbians exist, right? GL would (and should) go in romance, or whatever the story's relevant category is, and it's not a problem. I know people create BL way more than GL (and that's it's own can of worms which I'm not opening rn) but....
it's not difficult to scroll the romance/other genres and see a little BL icon on the comic's thumbnail - either if you're seeking those stories out, or if you want to avoid them. And I love that! It's good advertising from the creators within their genres.
Tldr; we don't need BL as it's own genre, it's double standards that it's ONLY male gay stories getting this treatment, and I am sick and tired of being treated as Other in this heteronormative society.