>I think the trolls, shills and agitators are a symptom of dysfunction rather than the cause. And I think the idea that more authoritarian states are stronger/more stable/better because they don't suffer this is deeply misguided.

Not to put too fine a point on it, but if 'the west' has a coherent set of moral principles at all they are probably inextricable with the idea that more authoritarian states are more brittle/more stagnant/worse. Even if it's true that free speech is being used against 'the West', turning our back on it in response would mean there's nothing there to defend.