Most gay people avoid several of the religions on account of them not liking us.
I've observed the opposite. The number of gay Christians I've heard of is staggering and confusing, all things considered. I don't know how anyone who isn't a straight man could follow Christianity and not have their head explode from the cognitive dissonance, and this is coming from a straight man who used to be a Christian.
That seems to presume you have to be a fundamentalist to be Christian.
Leviticus makes it pretty clear that Yahweh considers homosexuality to be evil and should be punished by death. There isn't much if any room for interpretation under that. Now, that's crazy, but the Bible is fairly crazy from cover to cover, and the cognitive dissonance would have to get to you eventually if you've read it and believe it but follow modern morality anyway.
I'll give the fundamentalists that much, they're completely right when they say that most Christians these days are making up their own version of god to make themselves feel comfortable.
It's just that the fundamentalists never see themselves as doing the exact same thing

Lots of stuff is forbidden in the Bible (unless God says it's okay, of course). A person would go crazy trying to follow it all at once.