Out of curiosity, did he give examples to how it was abusive?
Nope. But he did mention that there were so many straight couples wanting to adopt that kids were better off waiting on foster care for a straight couple than be adopted by a gay couple.
I watched a really good foreign movie on Netflix last year, Patrick 1.5 (don't think it's on there now) about this situation! The gay couple adopted a a baby who turned out being a teenager who disliked gays.
Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children the dragons can be killed. - G. K. Chesterton