Here I would disagree, freedom of speech is an ideal, and the constitutional amendment was based on that ideal. Universal platforms for speech are somewhat of a new concept, but there is still some precedent against de-platforming, for example with John Adams and his defense of the British soldiers in the Boston massacare[1], a precedent that still holds (held) with attorneys defending very unsavory characters not because they ideologically support them but because the basis of a healthy society depends upon it.
John F. Kennedy famously said "We are not afraid to entrust the American people with unpleasant facts, foreign ideas, alien philosophies, and competitive values. For a nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people." [2]
The time has come when America is afraid of it's own citizenry.
[1] https://www.history.com/news/boston-massacre-trial-john-adam...
[2] https://americanrhetoric.com/speeches/jfkvoiceofamerica.htm