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.
Going to attempt a fix
Our legislators seem uninterest in legislating and in general seem to believe that their main job is re-education, and not the work they were elected to do.
Indeed, "Let them eat cake." is the most famous thing Marie Antoinette never said, judging by the various anonymous and pseudonymous pamphlets and other printings that popularised during her time that and many other slanderous or otherwise hurtful remarks.
(( And no, I'm not saying a police state or anarchy would be an appropriate outcome. ))
To quote chief Nazi propagandist Goebbels from 1928:
We enter the Reichstag to arm ourselves with democracy’s weapons. If democracy is foolish enough to give us free railway passes and salaries, that is its problem… We are coming neither as friends or neutrals. We come as enemies! As the wolf attacks the sheep, so come we.
The modern-day far right is following exactly the same almost-100-years-old playbook, and there are still people who don't recognize that we are letting history repeat itself. What would your (great-)grandparents have thought if you told them that there would be open marches of swastika flag-bearing people in the US?
That happened to a far greater degree in the 1930s. There is nothing comparable today. Formal, large, organized groups representing literal fascism and communism were present in the US back then. Those great-grandparents were certainly aware of it. The US is a large and diverse nation - formed of the world's peoples in many regards - and you're allowed to follow almost any ideology you choose. That means extreme, violent statist-type elements - socialist, fascist, communist, theocratic, et al. - will never cease to be present.
"When Nazis Took Manhattan"
https://www.npr.org/sections/codeswitch/2019/02/20/695941323...
"American Nazis in the 1930s—The German American Bund"
https://www.theatlantic.com/photo/2017/06/american-nazis-in-...
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.
In the United States, our political class is deeply and fundamentally unserious. Our legislators seem uninterest in legislating and in general seem to believe that their main job is re-election, and not the work they were elected to do.