One of the reasons why a lot of the channels I've recommended are people who talk about issues of race, trans identity, or other marginalized groups is because I really want to listen to the people who've done the heavy lifting.

On the topic of refuting the specific arguments of JKR, I've seen a lot (a lot) of videos about it, but Contrapoints recently posted an extensive one that does that work of picking it apart to point out all the dog whistles in there.

But yeah. It's also been interesting to hear different trans (and cis) creators have different takes on it (all of them against of course, but there are nuances).