> Facebook, Twitter, et al are not public squares.
You can speak all you want in public spaces, on your own property (whether that be your home, your blog or your mastodon instance) mostly without limit.
I can't find it at the moment but there was recently a court case where a judge ruled that the constitutional right to Assembly was not infringed by pandemic restrictions (It is illegal in several US jurisdictions to assemble with more than N people in a private space) because people could freely assemble on online platforms like Facebook and Twitter. If the digital public square does not allow for free assembly, and the government forbids you from assembling in a physical public space, then it seems plausible to me that we have constructively eliminated certain constitutional rights.
I can't find it at the moment but there was recently a court case where a judge ruled that the constitutional right to Assembly was not infringed by pandemic restrictions (It is illegal in several US jurisdictions to assemble with more than N people in a private space) because people could freely assemble on online platforms like Facebook and Twitter. If the digital public square does not allow for free assembly, and the government forbids you from assembling in a physical public space, then it seems plausible to me that we have constructively eliminated certain constitutional rights.