My favorite is the supposed """"leftist""" who thinks China can't be communist because they're taking too long to transition away from capitalism. The timeline given? A decade is "too long."

Motherfucker, Marx and Engles in the Communist Manifesto hypothesized the transition from capitalism to socialism alone would take centuries, nevermind from socialism to communism. You cannot create a classless, stateless, moneyless society without reactionaries undermining you from all sides. Even the United States and France with their bourgeois revolutions saw multiple attempts by the aristocracy to retake their positions.