I think you'll find that all mainstream religions have unsavoury (by today's standards) bits in them.
Where do we draw the line, then?
Say, intifadah is a bit extreme. What about an eye for eye? Up to which points can your views be supported and justified by your religion?
If they don't want to invite gays into their home, that's fine. Their choice.
If they ban gays from their business, then it's not ok.
Is it also ok to refuse to hire gays, for example?