Social media companies often block content and suspend accounts in arbitrary and ridiculous ways, and they deserve protests and boycotts when they do.
Social media companies have a right to set their own standards. They should be answered by personal choices, not governmental force.
Even some libertarians have trouble these days remembering that both of these are true.
You're technically correct, and I completely agree that a government solution would be worse than the problem.
That said, #censorship is bad and culture matters. These companies have massive influence and should be run out of town for their tactics.
Long term, something like the #fediverse is hopefully the solution
Liberdon is a Mastodon instance for libertarians, ancaps, anarchists, voluntaryists, agorists, etc to sound off without fear of reprisal from jack or zuck. It was created in the wake of the Great Twitter Cullings of 2018, when a number of prominent libertarian accounts were suspended or banned.