> flat earthers, folks committed to a specific agenda
I find it hard to think ill of a "leftist movement" that opposes "flat earthers," but pretty much every reasonable adult is, to a greater or lesser extent, "committed to a specific agenda"—leftists no less than the rest!
That's not the piece I'm referring to, you're just referring to the one piece of a long statement that basically bashes Republicans, Libertarians, Trump Supporters etc. But folks like you HAVE to go to the extreme because your ideas are losing badly.