When someone claims "free speech infringement" and then has no data to back it up they are either trolling or don't really care enough to make a substantial argument.
BabylonBee is a recent example, and apparently Musk had a call with them prior to him making the free speech poll/twitter purchase: https://twitter.com/SethDillon/status/1511325246967660547 (Note: Musk has been on their podcast).
Likely BabylonBee still can't tweet (?), the offending tweet is still down: https://twitter.com/TheBabylonBee/status/1505288002746175494, also this one is word-for-word the same and up: https://twitter.com/TheBabylonBee/status/1503825449285300228.
Makes no sense.