It’s more than that. Denigration of homosexuality and transgender identity is inextricably linked with patriarchy. The means by which queer people are oppressed is tied very strongly to notions of gender hierarchy. They push biological gender essentialism and homosexuality as unnatural and dangerous specifically because it places heterosexual cisgender men in the highest social position possible. It allows them to benefit from the exploitation of women and queer people as much as possible. Queer people are less directly useful to them, and so they are generally very overtly violent and genocidal towards us. Trans people in particular are targeted as if one can change their gender, if gender is not innate, then it undermines the superiority of cisgender men over cisgender women. Men cannot biologically innately be superior if women could become men, in essence.

Accepting gay people requires an open mind.

Unfortunately, this isn’t true. It might be true for some number of the first people, but after that it’s just another thing people learn to accept because they were told to. That’s why even after homosexually become relatively accepted, you still had so much bigotry against bi people, and it’s why nowadays you still have so anti-trans people - a lot of whom would call themselves “open minded” just because they are accepting of gay people.

Also they arent producing fresh meat for the grinder.