The difference is one is people dissociating with you because they don't like you, the other is people locking you in a cage and killing you if you try to leave. Also, people cancelling you has literally zero to do with the constitution, so bringing it up in this context is a non sequitur.

The government using their enforcement arms to make your life miserable is actually illegal, which means there is an avenue of recourse available to you that other states don't offer because they don't have things like the first, fourth, and eighth amendments.

If you're going to come at this from the perspective "The state is bad and there is nothing left to talk about." Fine. You can have that position, but if you're going to try and say that, in the context of existing states, the Constitution doesn't make America qualitatively different than European states, then you're just wrong. It's a libertarian contrarian position that avoids answering hard questions about the structures of states while pretending to be above it all.