deep sigh
Okay so op, please note my reply that follows is not targeted specifically at you, but rather this question at large and the general tendency of this question coming up again and again in various chats and forum topics - and the way the conversation tends to end up. I am not mad at you, I am not trying to attack you, I'm simply trying to educate people on the shit that goes on under the surface that is never recognized whenever these conversations are had. Please, if you truly are curious and care about equality in this matter, do hear me out.
It's not just about "sex sells".
The popularity of BL in webcomics is an immediate result of the lack of gay content made by and for gay people in traditional media. Even if you broaden the range to gay content made by and for straight people, the only place in traditional media you'll find it a thing as of right now is Japan (and to some extent Korea). Most comic creators can not go big in Japanese traditional publishing because it's run in a manner that excludes anyone western, as they think we're all lazy and shitty and that we could never provide good enough material to bother publishing. And that's if you focus on people with manga style; people who have a non-manga style have practically zero chance to get man x man romance published unless they either run their own publishing business and risk all their savings to do so, or get extremely lucky with the art community with a comic that on top of the romance makes a political statement.
We don't always want to make a political statement. We don't want to be a political statement just to get recognized as people of value. We just wanna, you know, be people of value.
Whenever gay content and gay creators DO get the chance to enter the western comic industry, it gets extreme backlash. People start shouting about SJW bitches ruining their favorite comics this, LGBT tokens that. Seeing the things that LGBT people or creators of LGBT content face today when going into traditional media, is it really that surprising that we opt for web instead?
Because gay content is already scarce in traditional media, not only will creators of it have to turn to webcomics, but so will also its readers. It's just a matter of audience and creator naturally finding each other in a shit situation.
BL and LGBT comics will not stop oversaturating this site until they are recognized and made equal in other mediums.
Webcomics will not be an even playingfield between lgbt and cisstraight creators until the traditional industry is.
If you want to see a more equal webcomic platform, then you need to fight with us for a more equal world at large. Not mock us, question us, joke about us or criticize us for the success we see in one of the extremely few mediums where we can truly flourish. Doing so actually counteracts the development towards a more equal industry and thus increases the amount of time it will take before webcomics and traditional media alike are more fair to the respective creator types.
Also: Gay content being prevalent in indie industries is not a new thing! It's been a thing for quite a long time, before webcomics were big. It's been a thing for as long as... Well... As long as we've been pushed back hard by our own business. Go figure!