Hippies, at one point, were arguably the leftist conscience of the musical and political world.
Notwithstanding the (supposed) fact that all of the 1960's hippies grew up to become lawyers and accountants and moved to the suburbs and are now voting Republican, being a hippie in 2002 is about the safest thing around. There's nothing daring or threatening or groundbreaking about being crusty. Standing in a field listening to noodling guitar solos is bereft of inventiveness, it's the same stuff "our parents" did, which means it's established commercial shlock coming to a classic rock station near you.