@KawaiiMajinken I mean, it's a tired old archetype I've never really seen add anything to a story ever, humor included. Almost anyone in a manga who is any flavor of queer (or whatever the fuck you're supposed to call them nowadays) has their entire personality reduced to "they're comically insistent about wanting to fuck people of the same gender" and 0-2 additional gags, tops.
Also, if you've been around people who aren't heteronormative IRL, you'll very quickly notice that a fuckton of them are interesting people even when the subject of sexuality doesn't come up at all, so making so many of them this boring feels like canyon-sized missed opportunities, which can grate after a while.
I mean, he and I have only ourselves to blame for letting ourselves expect better from a harem isekai manga, but some things just demand to be bitched about regardless.
Consider this: Most manga characters are flat and 2-dimensional. It just happens that queer characters have queerness as their hat and defining trait. They're in no way more or less detailed than the rest of the characters. So it's not a case of "queer characters are badly portrayed" It's just that they suffer from the same problems that almost ALL characters do. So you expecting them to be much more deep, and less cliched is basically expecting the writer to put more effort into the queers characters than the non-queer ones.
Also, most people dont take manga as accurate representations of human behaviors. Be it straight or gay. And if they do, they're seriously stupid and you shouldn't be bothered by them.