I don't think so at all. With many players you can usually tell when they don't give a ****, but every single piece of information about Barton I've ever heard clearly states that he loves the club, loves the city and loves the fans.
He's even willing to take a huge pay cut to stay here. How many football players would do that? Never mind the ones who are only ever interested in cash.
He's definitely his own man though, so he's never going to take any **** and he's always going to take his own route in life. However, he can have strong connections and loyalties like anyone else.
I mean he's even purposely made a Twitter account to stay in touch with the fans, and released his own statement about the contract situation to be read out. He obviously cares about what the fans think and doesn't want any incorrect views of him to start appearing. This is unlike some of our players *cough* Enrique *cough* who has made no effort whatsoever.