Anyway pure curiosity, why it's always BL (Boys Love)?
If you're talking about shit of the genre, I think every genre deserves its share of shittery. There are many cheap vomit-inducing hetero romance with bad boys and stuff, there are many cliche-ridden boring fantasy with Kirito copycat MC, there are many scifi which concept doesn't make sense at all, there are many cheap horror story which has no substance of fright whatsoever, there are many slice of life comedy which is uninspired and isn't remotely funny... Some of them even in popular or trending multiple times... Some are "Stealing the spotlight" or "Overrated" too.
Why is it always BL which people shit on?
Because the stigma of fujoshi? Because it's gay? Because it's an easy target? I don't read BL (because it's romance and I don't like romance), but it's kinda unfair only BL creator got the shit...