This is a false equivalency.
Race, religion, etc. are protected classes. It's impossible for people to change their race, and our society has agreed that we shouldn't force people to change their religion.
Political beliefs are not protected classes. When your political beliefs include inciting violence by spreading unfounded conspiracy theories, then private companies have a right to kick you off.
> Certainly all the tech companies banding together to silence politics they don't like plays exactly into the narrative the far right is pushing.
In my opinion, the far right is already too far gone — they are already conspiracy theorists. Any contradictory information will be used as evidence to show that the conspiracy is much wider and bigger than one could have imagined — adding to the weight of the theory. There is no reasoning with them unless someone they truly believe (read: Trump) dismisses the theory convincingly.