I don’t think YOU understand the point. Samson is trying to argue that Musk’s takeover of Twitter has brought back free speech. So it is Samson’s claim that fails to understand free speech and it is HIS premise you are denying, not catsmate’s.
If we can all accept that, then we can move on to the weak form of free speech argument that Samson is presumably trying to make which is whether or not Musk is more permissive with what people can say than before.
On those grounds people are pointing out that on the one hand, people like Alex Jones are free to spread their ********, while people on the other side are arguing that some journalists who upset Musk will get kicked off and also Musk will capitulate to certain demands by, say, the Indian and Turkish governments to disallow content that opposes them.