When I did a Google search of #killallwhitemen, I found plenty of articles about how controversial it was, not celebrations and encouragements.
And there is a giant leap between a thought exercise about how women feel unsafe around men, and encouraging calls to kill all men.
I fully agree with what you are saying, but are you sure you responded to the intended comment? I was asking for examples of calls to kill all men being lauded, celebrated and/or encouraged.