It's because they think gubbermint bad (if run by centrist libs) but gubbermint good (if run by theocraric chuds). So they feel like they're "rebelling" against some democrat or whatever. It's all very unserious.

It's actually not all that mysterious. It's the same shit where Paul Ryan says he likes Rage Against the Machine with no hint of self-awareness. It's a form of cultural and ideological misappropriation which seeks to strip the radical roots from all imagery, aesthetics, stories, etc. and leave them as meaningless attributes for adorning commodities. The 387th brand of Rebel Cereal™. It may not be a primary process in the upholding of oppressive systems, but it's an extremely useful, and to some degree necessary, one.

The vector sum is fascism