system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: What you post on Twitter, Facebook or YouTube is not protected by the 1st ammendment

I keep seeing people freak out over 1st ammendment violations for social media sites censoring content.

These are companies. If you went into McDonald's and started screaming conspiracy theories they would kick you out. Is that a 1st ammendment violation?

If you don't like it, post what was censored elsewhere. 

Repealing laws that protect social media companies from liability against what their users post will have the opposite affect and will lead to much more censorship.

What am I missing here? The thought seems so widespread on both sides of the political aisle even. I get that they are major players in the way we receive information but there is nothing stopping people from going elsewhere or another company popping up to take over if people are really upset about the way they are handling things.
gpt
Strictly speaking your title is wrong. The things you post on social media sites *are* protected by the first amendment. You can’t be arrested, for example, for posting a “fuck Donald Trump” video or tweeting, “I think Joe Biden sucks”.

The things you post are indeed speech, and generally speech is protected. Like sure, you might be arrested if you’re using Facebook to plan a criminal conspiracy and what not.