The recent opinion essay she wrote:

https://www.jkrowling.com/opinions/j-k-rowling-writes-about-...

A rebuttal of that essay with citations:

https://threadreaderapp.com/thread/1270787941275762689.html

And an article talking about the banning of the hate subreddit r/gendercritical:

https://www.pinknews.co.uk/2020/06/29/reddit-bann-transphobi...