I know this is just a meme, but mini rant time here.
“Free speech” literally just means the government can’t arrest, censor, or penalize you for just for the things you express. Of course, there are exceptions for public safety, fraud, etc…
If Musk loses advertising revenue, that is the advertisers exercising their free speech in a free market, and deciding who they associate with.
These crybabies like Musk are upset at having consequences, and throwing a tantrum about their freedom of speech is an intentional red herring and attempt to recontextualize reality so they end up being the victim of some ephemeral bully.
The richest and most powerful people on the planet are not being persecuted.
They are just not used to being called out on their bullshit and are too weak and immature to accept being told they are wrong sometimes.