It's such a dumb thing to lie about but lying is just part of the company culture at Tesla. Here's the lead engineer of the Cybertruck trying to rationalize the lies:
Nowhere in your quote does it say it only applies to government. It only says that government won't make laws restricting it. It is intentionally elevating freedom of speech to a precept that is fundamental to the constitution of the state.
You have people in this thread asserting that freedom of speech is an inherent right while simultaneously supporting a corporation's ability to infringe that right and suppress speech through petty punishments.
Your main problem is that you're misconstruing the nature of freedom. Freedom isn't merely freedom from things, it's also the freedom to actually do things.
It is protection by the state. It is how the state is constituted. It's what the state means and offers. It's what the state is for and what, in principle, the state does.
If the state doesn't in fact do these things then you have a different state and the constitution is just a piece of paper.
It absolutely is. Freedom of speech means free speakers. If you're going to face petty punishments for the rest of your days because your criticized the "wrong" people then you are not a free speaker.
If you're serious about a free society that means you have to cop criticism, disrespect, and even mockery, most especially and particularly if you're in a position of power.