I would point out, though, Rhianne Moll, that many human cultures have existed and still exist in which sexual fear did not and do not manifest in stigmatization of gender and sexual minorities.
See Thailand for a contemporary example. The list of non-European or pre-Christian cultures with very little homo/trans phobia is too long to even begin listing.
Classical Greeks and Romans strictly regulated sexual behavior, but not in such a way as to stigmatize or shame same-sex attraction in itself.
It took Christian teachings to do that, and over a course of several centuries.
The sexual attitudes we feel today as “natural” really aren’t.
They’re a product of culture, and very particularly of Abrahamic religious values.