I think it can be a bad thing to know -too- much about musical performers. I think the best you can do is either take them or not take them as they present their music [and in some cases, their personas], and either decide, "Hey, I really like this guy's/gal's/band's music and stage presence!" or "Hey, this guy/gal/band is really really awful! I think I'll listen to something else."
After all, at the end of the day, those folks still have to take off their platform boots one at a time just like the rest of us.
