Aside from anything else, they've spectacularly missed the point.
The Sun's piece centred the male perpetrator of violence towards a woman. They have been advocating that for many years, being particularly vicious in the days after she published her article.
I don't recall any responses to JK's piece asking her to 'prove it' saying that they didn't believe it. On the contrary, everyone instinctively knew it was true because domestic violence is so common.
They're desperately trying to find a line in the sand that makes their threats of violence okay and his not.
And yes of course it's the Guardian that's letting them control the narrative because they is the Most Oppressed People Ever dot com.