I don't think being a gf stan is the problem bc by definition I may be one too, like is only natural since I happen to like men and they are gorgeous and I'm obsessed with them, like I want them so bad, maybe bc I'm also queer I really SEE their relationship and admire it, even if you don't think they're real you could still see they're close and can't deny they would be a power couple so is not hard to see the appeal
In conclusion I think is as simple as they are homophobic or hate zh or hb