Tangential question: do you advocate death for all bad people, a group which according to you includes the president?
In any case - "Kill All Men" was always just a shibboleth. Treating it as an actual policy recommendation is prima facie risible. Throwing it out there to see who is oblivious enough to object is the point.
Even if "Kill All Men" was just a shibboleth of a specific online culture, it seems like objecting to it would be a kind of moral duty (for the same reasons), as long we are in agreement that normalized misandry is bad. But again, in my generation I don't think there was any kind of consensus that misandry is wrong. That's why objecting to a shibboleth like this would be evidence of how "oblivious" and behind the times you are
This is why I asked how you managed to extract something other than "Kill All Men" from the phrase "Kill All Men".