"Yaoi/Yuri" is inherently demeaning
Before anyone says anything, I am NOT saying that portraying gay and lesbian relationships in media is any form of wrong.
I AM saying that that the terms yaoi and yuri are mostly (if not entirely) used by people who don't actually care about queer people. It's always a fetish thing. People who make/consume yaoi and yuri content always do it in a sense of pleasure from it, not out of joy for a romance, but in the fact that the romance is between two people of the same sex.
It's a separation of queer relationships from straight ones which (as a man who has been with men) absolutely disgusts me. It's exactly like "ebony" or "gets blacked" content, which is also personally revolting.
Edit: A lot of people have said it's more of a problem with yaoi than yuri, and I will concede I don't know as much about yuri as I do yaoi. Regardless, it's nasty.