Sure, but you can't stop people from creating spaces where they want to talk to people they agree with. And besides, I'm certainly not going to spend my time explaining to other people why lizard people are not controlling SecDef through mind probes.

I've got better things to do with my time, like telling you how I don't have time to do that other thing.

And the problem is that sooner or later some of these people will start to act out their radicalized beliefs with very ugly results.

That started happening long ago with Anders Breivik. And possibly earlier examples.

I never implied it didn't, but in recent years there always seems to be a ready supply of fresh grist for this particular mill.