[user104658]

In short it's all ad hominem (literal definition being a statement that attacks the person, rather than the argument) and it's just rubbish debate and not worth listening to. "I think what Rowling said is transphobia because [analysis of her words]" is an opinion worth listening to. "Rowling is a transphobe because REEEEEE dumb old hag!!!" is... I suppose... an opinion, but not one worth giving the time of day. It's also extremely misogynistic but then (ironically) an absolute boatload of "Anti-TERF" rhetoric is dripping in misogyny.