“Joking” about killing all men to make men feel uncomfortable is still clearly harassment.

Especially when they don’t permit the “joking” excuses to anyone else.

Here's my personal litmus test:

If you replace one gender with the other or one race with any other race (etc, etc) and the new sentence is offensive, then so is the previous one.

Is kill all women offensive? Then you obviously shouldn't say kill all men.

Oh, I absolutely agree - my original comment was perhaps ambiguous. This was the hypocrisy of someone who actively advocated for CoCs to be introduced even as she was actively harassing people who didn't fit her world-view.