Do you honestly believe these people are advocating for slaughtering half the human race and damning the rest of it to extinction? Or is there some hyperbole that is going over your head?
In your comment above, you said that the less-hyperbolic version is killing all "bad" men, including the president. If one is trying to get all non-"bad" men on board with this, why would you use an alienating slogan like "Kill All Men?" It's such a big messaging fail that I can't really credit them with any thought process.
This is why I asked how you managed to extract something other than "Kill All Men" from the phrase "Kill All Men".
