There's people in my town who are like this. The "oppression" even fuels their narrative.
Better to keep them in the mainstream discussion, respond with ridicule, and use moderation to squash the overtly dangerous stuff, IMO.
And ridicule doesn't work, clearly. Vanity may work for less-devoted people, but when you live in a deeply red state and are surrounded by Trumpers, there's no way you're going to speak up IRL, or break through the power of numbers in that social sphere.
There's enough people believing this that they're guaranteed to come into existence if you deny them access to mainstream platforms.
> but when you live in a deeply red state and are surrounded by Trumpers, there's no way you're going to speak up IRL
You can't interrupt the in-real-life contacts by any means (short of despotic ones).
But there's a certain number of people that will stop polluting an online space if they're being laughed at. But when you force them to create their own echo chamber even the more timid and susceptible to social pressure will be unbothered.
Then you go after the echo chamber.