To me it seems like America is increasingly the land of pushing boundaries and abusing technicalities from a position of power, such that politicians approximate those other countries you’re othering. Can we prove a link between congressional pressure for private companies to censor and the censorship performed by those same private companies? Not very easily. That’s exactly why members of the government shouldn’t even be allowed to suggest it - I view that itself as a violation of the first amendment (at least in spirit). It amounts to government coercion, and we shouldn’t be forced to accept the indefensible murk of not behind able to prove a link. As an example, AOC - as an elected, serving member of the federal government - should absolutely not be permitted to demand that Google and Apple censor Parler.
As a second term house member, AOC’s influence is mostly limited to getting her fans riled up on Twitter. Yes, companies can face pressure from people, but that influence is not being exerted via the government (via laws, it’s executive organizations, or it’s courts).
Frankly, you’d have a much better case if you pointed at politicians with much more power abusing their position (eg Trump or Biden), at least they have real influence on the DOD and DOJ. But even here, (recent) history has shown that this influence has very hard limits. Like Trump trying to punish Amazon by getting a cloud computing contract awarded to Microsoft, which was unwound this week due to undue influence playing a factor.