The public square is a recognized American institution for political change and messaging. The first amendment covers way more than freedom of the press. This video, to me, seems to deride it.
I don't see any derision of the first amendment or of the public square (not sure which you were referring to as "it" in your last sentence). When we exercise our freedom of expression, we have zero guarantee that we will be listened to, believed, or respected.
The derision I see in this video is directed at visceral belief in whoever is shouting in the public square, especially when their message is so clearly divisive. The discussion between the Freemason and the naturalized citizen is itself a fine example of free expression in the public square.