> The internet is an IRL thing, and these things also happened before electric cars. Unless you have some reason to think people's reaction to the truth is somehow fundamentally different on the internet than on TV or newspaper, I really don't see what your point is.
The internet is a fundamentally different communications mechanism than TV or newspapers. Reasoning about internet forum social dynamics using pre-computer examples, is like reasoning about modern infantry tactics citing victories from ancient Greek history. A hoplite phalanx would be annihilated by a WWII German infantry battalion.
> Subtly racist memes and dog whistles are created by censorship. If a person believed "black people are criminals" without censorship, they would just, "black people are criminals". How effective do you really think censorship is if the entire point of subtlety and dog whistles is to get around censorship?
Sorry, no. You're conflating censorship with exclusion again. "Censorship" didn't create those things; they were created by the widespread rejection and condemnation of the underlying racist ideas and the racist people who hold them. Earnest, up-front advocacy of racism isn't going to be effective in a population that's been primed to identify and reject it, so racists setup recruiting funnels with obscured entrances to spread their ideology by radicalizing people more slowly. That situation won't change, and the racists won't abandon their subtly racist memes and dog whistles, unless racism becomes respectable in polite company, which would be much worse than what we have now.