if you can't see how it's degrading to refer to someone as their position relative to sex then I wonder if there's privilege there. if someone did that to me, they'd never see me again. but I do see the case for bad memory. if you can't recall a character's name when it comes up multiple times in any given chapter, in that case it would be a literacy issue and I think the only thing that helps w that is to continue reading w concious effort.
why are you assuming people would treat real person the same as fictional character? its not like i go around the streets calling every gay people i meet with their sex position, of course id put more efforts when interacting with real people. maybe expand ur horizon bc some authors do this to their own characters, especially in the danmei novel sphere
as an author myself, there's a lot of effort that goes into our stories. we travel, meet new people, listen to their stories, tell them ours, we see each other through those shared experiences, and through those connections we form obnoxious bonds. the characters are fictional but they represent the experiences of real people. maybe expand your horizon bc why would you refuse to use their names?

I dislike how readers refer to characters by their positions related to sex like they're some nameless autobots and I see this literally only in the discourse of queer fiction. just heteros talking "this bottom" " that top" "this uke" that's how you can tell queerlit, and by extension queerness, is only a fetish to them. then they go on to express the disdain they feel as if discomforted by the complicated but very genuine human experiences unfolding within the story. the sheer arrogance and homophobia of it all like do you even realise what you're saying.