If someone writes a post saying the sky is green, NASA says "that's wrong", and then goes on to say that if the social media platform doesn't remove the post sa

If someone writes a post saying the sky is green, NASA says "that's wrong", and then goes on to say that if the social media platform doesn't remove the post saying the sky is green, NASA will forbid the platform from sending any messages using communication satellites, then yes, that is censorship. Of course, they're unlikely to behave so blatantly, at least initially. They're more likely to just sort of hint at how anti-trust prosecutions might be started or not depending on whether the platform follows the government's "advice".