Oh, goodness.
Look... I understand what you think you're advocating, but it doesn't work. It's wrong, it's lazy, and it's irrelevant.
I'll link you to an article from The Atlantic, no less:
It’s Time to Stop Using the ‘Fire in a Crowded Theater’ Quote
From the article:
Today, despite the "crowded theater" quote's legal irrelevance, advocates of censorship have not stopped trotting it out as the final word on the lawful limits of the First Amendment. As Rottman wrote, for this reason, it's "worse than useless in defining the boundaries of constitutional speech. When used metaphorically, it can be deployed against any unpopular speech." Worse, its advocates are tacitly endorsing one of the broadest censorship decisions ever brought down by the Court. It is quite simply, as Ken White calls it, "the most famous and pervasive lazy cheat in American dialogue about free speech."
Please stop using it. It doesn't do what you think it does, it doesn't make your point, and it has ZERO legal bearing on the topic at hand.
Nobody is arguing "free speech" is boundless. Nobody. The "fire in a crowded theater" argument is pointless, and it has become nothing but a tired cliché, and it has never been grounded in law.
What's more, this line of thinking has nothing whatsoever to do with ... "untruths". None.
"Do you not understand that?"