Earlier quoted context omitted.
A single individual or organized group possessing thousands of accounts used to astroturf a platform is abusive of the platform, regardless of what the message is - banning that sort of activity doesn't seem dystopian.
I don't disagree at all — but in your hypothetical situation, they're clearly not being banned for causing "unrest." They're being banned for creating fake accounts to spam the platform en masse, "regardless of what the message is" as you say.
> Saudi Arabia’s state-run media apparatus were found to be “engaged in coordinated efforts to amplify messaging that was beneficial to the Saudi government.”