doesn’t that mean they’re all “not real”? It seems incorrect to single B out under that logic.

Depends what you mean by "real."

I'd put the alphabet salad on a continuum of delusion, with homosexuality being the most deeply conditioned behavior owing to some sort of early trauma during sexual maturation and trans-sexuality being a purely social disease or "choice," many times coerced in vulnerable adolescents by the tranny political lobby and their accomplices in medicine and psychology.