It's like the lack the most basic understanding of economics and they never read any history. I mean, communism has failed everywhere it was tried and there were so many A/B test that plainly show each system's results: North vs South Korea, Eastern Europe before vs after 1990, USA vs USSR, Argentina during the last hundred years, Venezuela before and after Chavez, etc.
Or they push socialism under new names ("democratic") as if it's a new thing, not just a watered down form of communism, with authoritarian communism being the logical end game of socialism - because "at some point you run out of other people's money" and you need force to keep fleecing them. Just like it happened in Venezuela...