The answer is as simple as just because they want to and lots of gay men including me read yuri you just don’t see because you’re on a site with straight fetishizers anyone in gay circle that reads manga has read and likes yuri
Not everyone reading yaoi/yuri are reading it to receive a sexual response from the content. Someone's sexuality doesn't restrict them from enjoying content for entertainment lmao. This is like asking why a gay guy would go see a movie about lesbians.
True, ppl can read it for entertainment purposes, it’s just that (most) yaoi seems to be based on the sexual factor ┗( T﹏T )┛
I’ve been a yaoi fan for some time now and find it interesting because it’s a turn on and I like the romance aspect (I dislike a lot of yaoi tropes tho). I’ve noticed that even lesbians are interested in this genre and I’m curious to know why. I thought yaoi would be a turn off for them since they’re strictly interested in women. Also cuz Ive never seen gay men that were interested in yuri. Ppl have different opinions though.