Looks can be deceiving. Although he looks like a freak in a fairly spectacular fashion, when he opens his mouth it turns out that he is a surprisingly bright and articulate conservative. I don't listen to his music, but I've seen him slice-n-dice liberals in interviews and in roundtable discussions.
I'm guessing his appearances are a gimmick for PR and business purposes, and gets him lots of media time. But if you dressed him in a suit and tie, he would be indistinguishable from any other conservative media personality. I've seen him crucify liberals on news channels on more than one occasion.
I read Timothy Leary's autobiography Flashbacks. He was a member of several liberal organizations but became disinterested in them as he could tell that there were communists who had infiltrated them (as well as HCUA agents). While Leary's politics were left of center, he did seem to be against tax redistribution schemes and held some other positions that would surprise FReepers.
Such political positions don't "redeem" some people who have done a lot to harm society. It just shows that people do have different opinions. I'm sure that everyone on FR knows that FReepers hold some positions that each other agrees with and positions that each other doesn't agree with.
Just because someone disagrees with a liberal doesn't make him a conservative.