I love metal but I think there's a kernel of truth to this not in causation but correlation, there was the counter culter but then there was this other side that was this American death drive that really kicked into high gear after the Vietnam war, vets became radicalized in different ways and a lot of them brought some real dark shit back into the American right with them. Kathleen Belew's Bring The War Home goes into great detail about how a new breed of American esoteric fascism and militancy on the right arose out of the post Vietnam war era in no small part due to backlash against the civil rights movement as well.