In the first place, you aren't comparing like with like: this is a legal right we're talking about in the current thread, and it should be pretty obvious that legal rights are an entirely different kettle of fish from, say, what goes on on twitter. Losing a twitter account is not "silencing" anybody; it's just losing a twitter account. It's the online equivalent of being uninvited to a party, or to being thrown out of a pub for breaking the bar rules.
If you can't see the massive difference between the protection of legal rights, which is to say a protection from government, and having tweets or social media posts deleted, that's your lookout.