Nice quote and all, but that's not the exact legal doctrine as applied under US Constitutional Law. It's applied against governmental regulations against free speech that are largely deemed to be overbroad or vague, not against what some private person may say.
Anyways, what do you propose to do exactly?
Remember the analogous part? It's not the exact same thing. Can you please wrap your head around that? And in any case you're still wrong. It also applies to civil actions which is why there are anti-SLAPP laws.
Propose to do about what?Anyways, what do you propose to do exactly?