That is the rhetoric of the alt-right and the incels respectively,

Yeah, funny thing about that, I knew about the red pill long before I ever heard the term "incel." And when I did see people start to link the term to incels, I noticed that a lot of the people pushing that connection the hardest were the ones who gladly slapped labels like "Nazi," "fascist," and (amusingly enough) "incel" onto to anyone who didn't share their own progressive ideology.

So I'm inclined to take any claims of extremist ties with the same grain of salt that I reserve for claims of coding and dogwhistling; just the usual motherfuckers who (almost daily) demonstrate their obsessive need to manipulate and control language doing more of the same.