While I personally dislike yaoi content as it's not to my taste (and attracts fujoshits), the concept itself is not that big a deal because in the end it's never used to push ideology or some other garbage, unlike Western comics and media which exploit such stuff. It's just aoftcore (or hardcore) erotica with a simple romance plot between 2 men, not some sort of virtue-signal.
Western comics can't seem to shut up about gays and society, even though literally nobody but a small, always existing minority of people are openly attacking them. The constant pride flags all over the place and corporate shilling and stuff like changing a banner on a subreddit is all so fake and literally gay, as is the entire concept of a "pride month". Note that this is only for Capitalist Western countries, and this started in the USA, The place this whole hullabaloo started. This gay pride, is inane idpol, because it's the same as being proud you're white or of a certain nationality - if your identity is built on superficial things like who you fuck and what skin color you are, you're essentially a shallow NPC because this whole pride thing is just a mess of ideology. It's intentionally dehumanizing because it encourages people to have samefaced personalities and not disrupt the porky status quo. Anyone who speaks out against this is immediately a homophobe, even other gay people who 'dare' to point this out.
So what does this have to do with Yaoi? The fact that Yaoi stuff doesn't promote this, the content does not define the characters involved nor is it some shallow, misplaced source of pride or ideological basis.
A good example of stuff that inspires Yaoi is the Western interpretation of Sasuke and Naruto - the two are often paired in stories due to the latter's obsessive behavior, even though that was a hyperbole of the author to emphasize how much Naruto values his bonds and friendships, which is the Japanese POV, but I digress - this fact of course encourages yaoi pairings of the characters, however while doujins and memes tend to make it short and sweet (or humorous) and not exploitative, Western authors, (like in fanfiction) tend to dramatize it into a mix between a disturbing cocklust and a bad Indian Soap Opera. But because people fear being called out as "homophobes" for pointing out how blatantly idpoled the content may be, they stay silent.
An example would be the rainbow flare on the r/NarutoFanfiction subreddit. A recent thPost too long. Click here to view the full text.