Not supporting Musk here, but there is some truth to the claim in the headline.

One major danger we currently have is everyone thinking that social media platform accounts are property. They simply aren’t – at least, not yours. If the company decides to terminate your account, they can do that. It will be supported by the TOS. You do not own it.

You also don’t own data you put on it. Post a bunch of photos to FB? They own them and can do whatever they want with them.

The danger is that these things are so ubiquitous they appear like information utilities, but they are not. They are corporate services wholly owned by their respective corporations. It is something that makes federated systems stand out from the crowd (not that you own an account there either, but there at least is not a single centralized corporate owner).

More people need to be made aware of this.