Calling that comment, "incredibly hateful and transphobic", can take power away from things that are actually hateful and transphobic. JK Rowling is a transphobe and can fuck off, for sure, but that comment was not hateful. They never even mentioned their own opinion on Trans rights anywhere in it. It was just an incredibly naive and ignorant take about the JK Rowling situation.

That being said, it was a bad take, for sure. It's dumb to give anyone a pass for shitty behavior based on other things that they have done.