Let's try to keep this discussion healthy if possible. I think it's important to bring up that a lot of LGBTQ+ and even specifically BL creators are actually more on the same page with people who dislike many of the bad tropes from older BL than people might think.
The important thing to get out of the way first is:
BL Creators are not a hive mind.
For every BL creator you find who is like "bleh, I'm so tired of the genre being dominated by young, skinny pale guys with a seme-uke dynamic that's really toxic", you'll find another BL creator who goes, "it's just fiction and I like these tropes and I like drawing skinny pretty boys and it's what sells and allows me to have a career, why are you policing what I'm allowed to write/draw!?"
Like there's this common misconception that there's some kind of grand LGBTQIA+ illuminati and we are all in agreement that all queer content is beyond criticism and anyone saying otherwise must be shut down... but it's not really the case. The LGBTQIA+ community actually criticises and gatekeeps content by its own members really hard.
Some creators put their work in the new LGBTQ+ category rather than BL, even if it's a M/M relationship, and their reasons might be:
1. They feel that BL readers expect certain tropes like seme/uke, or want highly sexualised and conventionally attractive male characters because it's an audience that skews heavily female (apparently only about 13% of readers of BL are gay men) and they want to do something aimed at a different audience who are less....um... intense.... 
2. Their work also touches on other queer identities, like trans, ace etc.
3. The work isn't purely Romance. BL tends to follow the plot beats of a Romance and have the relationship as the core conflict of the story.
Most BL creators I've spoken with have expressed that they often find the stuff Tapas licenses and buys in contains a lot more harmful tropes compared to the community-created content like Tapas originals and free to read comics. They'd like to see a greater emphasis on just broader content and to make the genre healthier.
Overall though, I think the thing is... I'm not the best person to make any judgement on the value of BL. I don't really read Romance that much, I only even read a couple of GL. I prefer LGBTQ+ mainly because I don't often enjoy works with Romance as the primary genre whether it's straight, gay or anything. I like romance as a secondary element in a plot about... I dunno, an adventure or a mystery usually. It's important to say that just because something isn't my personal cuppa, doesn't mean it's bad. Tapas have to keep the lights on and pay for the servers where our comics and novels live. Romance is the biggest genre in print literature and has been for decades and now it's the biggest genre here, and there's big demand for M/M romance from the audience. What other people like really....isn't my business? I've never read Twilight either. I've heard it's bad but like... eh, honestly I thought the prose quality and pacing in Percy Jackson was bloody awful but I don't go around telling people they're bad for reading that or wanting more content like it. If people make more stuff like it... it...doesn't affect me at all?
I want other genres to grow and to be represented, but I also understand the tricky balancing act Tapas needs to keep on top of, of making the most of the audience they have and selling more of what that audience wants, while also trying to expand their catalogue and getting in new people to read those genres. I'd also like it if the novels section was less focused on isekai, but I see waaay more people complaining about formulaic BL than formulaic isekai stories.
