Based and cuck both pack a punch and have a non mainstream sound, even though they've kinda become mainstream, so they get used by extremists all around. I think horseshoe theory might be true for language because the middle and moderate people can just express their beliefs with common language, but more obscure positions inevitably see their adversaries and some terms they like in them. Realpolitik I think I've seen used by chan heads too, and red pill maybe started more leftist until chuds took it over. Honestly -pill language is ubiquitous to extremists, because we all swallowed something the mainstream didn't want to show us.