is it possibly because of same sex parenting?
Extremely unlikely. The vast majority of households are heterosexual and seen no clustering of being trans-identified children around same-sex parent groups. There may be some modest correlation with households without a father in so far as male parents are probably more disposed to put a stop to such things, but I've seen nothing I could actually make a case on. Just anecdotes. Do not confuse trans with homosexuals. Most trans people are heterosexual. Even if they claim to be "bi" or "non-binary" or "lesbians".
