Free Speech and Twitter Depends on what you mean by acceptable.
As I said, I believe free speech is about the expression of genuinely-held ideas. It would be exceedingly difficult to prove someone espouses ideas that they do not genuinely hold and that's a rabbit hole I would not enter.
So if you're asking if I believe it should be legally punishable, then no. Besides, I don't think there's anything in the track record of states that suggests they're remotely capable of wielding such power responsibly,
especially not the current political elite. Quite the opposite in fact.
The only cure for propaganda is free and open discourse.
The telltale sign of unhealthy public discourse is an aversion to criticism, exactly like the one we see today.
Aversions to criticism are only held by people who know their ideas are flawed. At the same time it reveals a deep personal (ego) investment into those faulty ideas - this is the element of ideological possession also seen in totalitarian societies. Debate is feared and is by definition personal, so it is avoided and dissonant voices are silenced.
I wonder if this deep investment into political ideas could also be witnessed in the '30s and '40s.