Uncontrolled free speech benefits the more powerful, manipulative forces the most. Apparently a huge portion of people's minds can be bent with disinformation in order to create supporters, voters, haters, etc. Probably this is the biggest threat to humanity currently, and this is what Elon Musk's X platform (and himself) supports.

Free speech is very important and powerful, but truth (the real truth) is what matters the most. Free speech of lies and conspiracies is a very dangerous thing until most people gets good enough in critical thinking.