Are you aware of the term "public easement"? In many jurisdictions you are not able to block public access to your "private property" once the public gets accustomed to accessing that property. Same thing should apply here. You don't get to just open your private property for everyone to use and then close it for people you don't like politically many years later.

Section 203 made them a public square because unlike the private property who would be liable for whats done on that land twitter gets a pass. And its looking more and more like they shouldn't. And if that happens twitter wont exist.

You know perfectly well that that's not a satisfying argument to what I said. Try again.

And, you're wrong by the way. Courts have already ruled more than once that it is, which is why Trump's account still exists.