Earlier quoted context omitted.
That would be both terrible and dramatically different from what I was talking about. The context here is private websites filtering comments. If you are in a private restaurant expressing some horribly offensive opinion it is appropriate for the owner to ask you to leave. It would not be appropriate for the police to come in and gag you.
There is no difference whatsoever. All your censored communications would be attempted -- and rejected -- through private websites, too. So how would you feel about it? How would you feel about the oppression you're looking to subject others to, being applied to you?
You have the right to free speech, but you do not have the right to be listened to. If you are on private property the owner can ask you to leave. If I wrote a script to send you an obnoxious email every 5 minutes I imagine you would set up a filter so you would not have to read them or even be aware of their existence. You don't have the right to make other people read your (hypothetically) obnoxious comments any more than I have the right to make you read my obnoxious emails.