There been a more divisive and contentious rock 'n' roll personality than Kid Rock for sure. I don't even think of Kid Rock in that way at all. There are lots of rock 'n' roll personalities that are divisive. There are too many too list but people like Ozzy Osbourne would be one. If you consider his music rock 'n' roll, which I do.
Kid Rock is the face of rock 'n roll's edgy side, He appeals to a very diverse fan base because does have a hard core "screw you" attitude he presents to the public. However he is moderate compared to the real bad boys in rock history. People such as Jim Morrison or David Bowie. They really created splits among the both promoters and fans.
No, there hasn't been a more divisive rock 'n' roll personality than Kid Rock. Kid Rock has stirred a lot of controversy since he has been in the public light. I believe that it is all just an act though to get more people talking about him. I believe that he is really a good guy.
Probably the most controversial rock and roller was John Lennon, who tended to say and do many things that created anger. The first controversial thing he said was claim that The Beatles were bigger than Jesus, which prompted public burnings of Beatles records. Later on in the 70s, he angered Conservatives with his anti-war and anti-establishment stance, and was not one to shy away from expressing his views that were as controversial as his Beatles greater than Jesus comments. Lennon was so divisive that to this day, people still say bad things about him, accusing him of being a traitor and communist. Kid Rock may have been contentious and divisive in some ways, but he doesn't hold a candle to Lennon, not by a long shot.
Kid Rock is divisive and contentious? I can think of Marilyn Manson and Trent Reznor as two figures who are both polarizing to their fans but who also draw the ire of those who disagree with their shock tactics. Manson and Reznor do shocking things just to get noticed. Kid Rock is just being himself. Kid Rock isn't even close to being the most divisive and contentious rock-n-roll personality on the planet.