uncritical support for the DPRK in its heroic struggle to liberate occupied Korea from the genocidal American empire

I thought it was to make it look like CCCP, which would still be an extremely lib reason.

cause I do basically the same thing in reverse by saying “the DPRK” and “South Korea”

See, you're actually not doing it in reverse though, because you're not racist. Wikipedia, a racist website written by racists, does not do this based on ideology. As far as Wikipedia editors are concerned, all Koreans equally lack the right to name their countries. Behold

I do basically the same thing in reverse by saying “the DPRK” and “South Korea” to cheekily deny the south the legitimacy of a real name

Every time a lib at work mentions an invention of 'Korea's' I ask North or South cause I know they hate the DPRK.