As I’ve said countless times (odd how lack of readily ability correlates to JKR fandom on here at times)
it’s not just what she says, it’s what she supports, what she reposts, what she promotes and who she backs.
I personally find her actual comments to be pretty shit and dislike her for that alone, but it goes beyond that.
She actively supports women who have a far harder line view on trans men and women than she has outwardly said herself, she often likes tweets that are much more hateful than any she has written herself, and promotes companies that sell merchandise that’s pretty fucking offensive, and again nothing she would outwardly say herself.
When someone is perfectly nice on social media posts but likes the odd EDL tweet it’s pretty clear they’re not as nice as they portray on their own channels.
Same applies here.
You don’t have to swear to be hateful
You don’t have to issue death threats to be hateful
But you will never understand this issue, so there is little point engaging further
Thankfully support for JKR tends to be closely aligned with increased age, it’s just one of those issues older people will promote until they start to fade out, like racism and homophobia.