The Tau were never commies because the caste system has always been a part of their foundation. Their best analogue is probably the Incan Empire, safety, security, and plenty as long as you are comfortable in your spot on the hierarchy. Also the whole mind control thing has always been largely imperial propaganda. The newest Tau book, Elemental Council, provides strong explanations for why the Ethereals are followed without resorting to mind control nonsense.
The Tau were never commies because the caste system has always been a part of their foundation. Their best analogue is probably the Incan Empire, safety, security, and plenty as long as you are comfortable in your spot on the hierarchy. Also the whole mind control thing has always been largely imperial propaganda. The newest Tau book, Elemental Council, provides strong explanations for why the Ethereals are followed without resorting to mind control nonsense.