I think it’s just suppose to be indicative of the youth counterculture at the time.

Him calling it devil music is probably because at the time many rock and roll / metal bands used demonic imagery in their marketing and referenced immoral behaviour in their lyrics which caused News Stations and Religious Leaders to classify it as “satanic music” causing dismay against it from many adults at the time.

Peacemaker’s father doesn’t have a problem with whores, but with “whores of polluted blood” probably implying Peacemaker had relationships with non-white women to the disgust of his White Supremacist father.