The worst part was watching when Miller would go on the Bill O'Reilly show back when the war was in full swing and they'd engage in some ridiculous "ha ha, John Kerry wants all our soldiers to die & Saddam to win!" clown act. It got pretty disgusting at times.
Question, then-would South Park be considered conservative comedy? I know there was a trend a while back for people to call themselves 'South Park Conservatives', and Trey Parker and Matt Stone have talked about how much they "hate liberals". They've also ripped on cancel culture with the character of PC Principal, and Eric Cartman is almost deliberately designed to wind up progressives.
Matt and Trey are equal opportunity offenders IMO.
I'm with Xerxes. Cartman may wind up progressives, but he does it by parodying the right wing. They offend the right as much as the left.
With Trump being the black hole of ID that nearly broke them.