I think they have an understandable reason for that (too much harmful misinformation about covid going around, they don't have enough eyes to sort it out, and at their scale it's probably net harm reduction to put a simple wordfilter on it for now), but I'm a lot more sympathetic to arguments along these lines in particular. I could believe that moderation is more effective on smaller userbase-scales because it reduces the need to adopt blanket policies like this. I don't think it does the issue justice to reduce the problem down to just that there's too much/little censorship as the earlier post did.
Look up Lindsey Shepard of Canada and why she was banned.
Also the Aytu ban was pushed by a NYTimes writer and twitter often bends their rules to that. Aytu bioscience is a publicly traded company with deals with one of the largest hospitals on tech they have been working on since 2016. They even have a SEC filing from this week of their deal on the tech which twitter and YouTube both banned because a nytimes reporter complained (bias against the president).