You're missing the point - if someone, broadly and irrevocably, is responsible for deciding what is true and repressing things that say otherwise, then that mechanism, even if used truthfully by one party and viciously by another, is itself a bad mechanism by virtue of being so easily abused. The very existence of a "bad others" in your government implies you do not want to give power to government.

That is the whole point. if you add power while you're in office, you better believe that power will be used against you while you're not. It's not about good vs bad, it's about giving power to an organization that itself can be flipped good or bad by one election.

Of course "ours==good, theirs==bad" is a different, dangerous cognitive problem, but institutional power creep is orthogonal and needs to be fought regardless to protect all of us from that power being used against all of us. That is a prerequisite to civil society wherein we're forced to live with people with completely different world views.

Because right now, platforms can and do cave to government pressure, so they're just thin proxy enforcement arms against dissent.