If you're asking "is it wrong to enjoy the art of a convict?" then possibly no, so long as you can separate the two notions. I still listen to the Who with no ill effects.
If you're asking if he'd never been involved in scandal, if Gary Glitter's music is acceptable, then God no.
(I did see him in concert in Dublin's Point Theatre when I was much yonger, but not so young I got invited backstage.)