I don't disagree with any of that.

While this revolution happened in China 50 years ago, in America it is happening now. The Chinese suffered and learnt, as did the Russians, neither of which is moving towards socialism today. American socialist-thinkers however don't have that first-hand experience to call on, and in a sense they have no natural immunity to these bad ideas. They need people like you to talk sense to them or else they can learn the hard way (and take everyone else down with them). What is the phrase... fuck around and find out?