We have been told, have we not, that transgenders are not homosexuals? The problem with that, of course, is then which gender attraction is homosexual for them? If a man says he is a woman, wears a dress and shaves his legs, yet still lusts after women, is he a lesbian, heterosexual, or just confused? It really comes down, does it not, to whether he is actually a man or a woman?
Let's let science decide. If a man is genetically a man and is attracted to women, he is a heterosexual, period (We would, naturally, need to accommodate the extremely rare cases where the genetics are murky).
If he is then, in fact, NOT a homosexual OR a lesbian, does he really belong in that group? I can see where the acolytes could be upset, not desiring hetero membership.
And that also raises the issue of giving heterosexual men access to women and girls in various stages of undress, but that's a different topic.