As far as whether or not these companies engage in censorship, I agree that they certainly do. It's just that it's not illegal/unconstitutional, as per the 'censorship narrative' alluded to.
Platform censorship is barely legal per my view of section 230 which I have studied thoroughly.
It's also highly immoral for them to craft their own narrative out of user generated content which was never the intention of 230. The crafting of a narrative of available information and the presentation thereof is called opinion which is the province of publishers.
As far as whether or not these companies engage in censorship, I agree that they certainly do. It's just that it's not illegal/unconstitutional, as per the 'censorship narrative' alluded to.