I mean he's not a leftist. I'm ignoring the constant sexual harassment and latent homophobia that seems to permeate the entire show and pretty much every character here and also that he's like a huge dick, but all his criticisms of people, the system and the world are oddly leftist. Never really noticed when I watched it back in it's heyday.
Even the "bad opinions" the show displays in certain episodes are presented as such. There are a couple of lines here and there that could be accused of transphobia, but I feel like the show doesn't punch down, it just shows that Hank (or whoever) is just a bit behind the times