Yeah but this phenomenon isn't unique to social media. Mainstream media sources and alternative media sources beat the same arguments into the ground enough ti

Yeah but this phenomenon isn't unique to social media. Mainstream media sources and alternative media sources beat the same arguments into the ground enough times that you end up assuming validity. I can make the inverse argument that being told an argument is so offensive it's not worth examining creates this bias in kind. In fact I would argue the point of opposing "hate speech" is not to rationally confront it but to denormalize it so it doesn't affect people's beliefs. Same goes for anti-heresy beliefs, "conservative-only" posting requirements, and many other forms of censorship. I don't think far right communities are unique in the amount of social conformity demanded from members.