As a gay guy i agree with some of it but not all of it. I guess i'm part of those guys who don't think they belong to a community, at least culturally. Community wise i have mostly gay friends so there is that, but i certainly don't have anything in common with any sort of community in term of clothing, musical taste, or anything. I would find that a problem if i watched tv shows in relation with my sexuality as you say. At least not everyone lives his sexuality like that.
Now about the matter, hm.. Well in my position, yeah i also like homosexual characters to be showed as "nothing special", meaning yes ok they are gay, that doesn't have to change everything about them.
I also understand the idea that maybe straight people who say that just want them the most invisible they can. Maybe, i don't know, i generally hear gay people saying that more than straight people. So i'm surprised about that statement.
There should be nothing wrong with both representation i guess. Stereotyped, culturally charged gay character and subtle one, cause both exists.
Yeah this is where I stand, both representations are ok and needed, I also understand the frustration of people when facing with comments that her gayness should be subdued. It feels like pandering to a straight audience that is uncomfortable with actually being different people in the world. That being said, your point stands, we need both; characters like Dumbledore, where his orientation only informed about his loneliness and latter his heartbreak; or the cast of Looking where their orientation defines a lot of their social interaction.
With all of this I'd love to see an unapologetic flamboyant straight man. I really don't care how, but I really like that image in my head.