I think there’s a disconnect here. I’m talking about supporting a person’s right to free speech, protected by the government, and not necessarily supporting the person speaking, or supporting the ideas he espouses. It’s a fine distinction, but an important one.
“Monsieur l’abbé, I detest what you write, but I would give my life to make it possible for you to continue to write.” – Voltaire, letter to M. le Riche, February 6, 1770
As for Thiel, while I support his right to criticize his detractors, his attempts to silence them is indeed deplorable. One hopes that will come back to bite him one day.