I'm offended by all of these comparisons. The point of the chaos gods is that they're extreme and highly distorted depictions of the kind of things that fascist societies most fear. The Imperium / Empire are built on absolute and total control, and the chaos gods are the things that they cannot control.
Yes, in canon, the chaos gods are objectively evil, but they're evil as distorted nightmarish examples of conservative fear-mongering. Depicting Trump as the god of "Fuck gender, do drugs, have sex, rock & roll" is pretty fucking nuts.
These guys are fascists. They're not the chaos gods, they're the High Lords of Terra.