The anti-trans feminist thing isn't anything new, actually. From what I gather, anti-trans hatred seems to be a part of some feminist discourse in the 70s or 80s, so the people who are still espousing such idiocy are behind the times, not just getting into something new. Some people just never leave behind their prejudices from decades, ago, though.
An important thing to note about Carol Adams is that she's a Christian who teaches at a religious school, she's not a left wing liberal type. I think her anti-sex and anti-queer rhetoric is probably mostly just about her trying to dress up her religious views as something that can appeal to the left.