The red pill is about knowing the truth, both in the movie and in "alt right memes" (translation: any idea that is incompatible with far-left ideology).
Red-pilling obviously has nothing to do with misogyny, although depicting it as such is typical of a class of mind-control tactics that rely on emotions. Specifically, triggering an emotion has the "interesting" effect that it lowers your #Q and destroy your ability to analyze rationally. Interesting for the manipulator, that is.
This is the basis for race baiting, for appeals to "mansplaining" or "misgendering" or "big money" or "alt-blah", for sleeping giants and other attempts at censorship, for anything that portrays the other side as deserving hate, scorn, mockery, for being such sub-humans that they deserve to be silenced, removed from society, deprived of their rights and treated like monsters. "Smelly Wall-Mart shoppers" also fits in that category.
All are ad-hominem attacks of the lowest sort. But they are convenient tactics, sometimes even a strategy, when you have insufficient facts to support your side. No facts? Emotions will save us, our safe spaces will save us, we take the blue pill.
It's unfortunate that Slashdot filters this kind of blatant manipulation less and less from their stories.