If you missed it, the point under discussion is Apple having removed Parler's access to the app store (and by extension similar action taken against Parler by other providers like Amazon). Apple, Parler and Amazon are all private entities not directly constrained by the first amendment.

Why does that technicality matter? Because it eludidates the hypocrisy of trying to claim that Lin Wood's call for Pence's execution was "technically" a call for a legal trial and execution and not for the mob violence that actually resulted. Which was a ridiculous argument.