That's your opinion. A celebrity DOES owe something to the fans or they wouldn't be celebrities. How hard is THAT to understand.
He's not a talentless publicity-seeker looking to get another cover on 'Hello' magazine, he's an actor employed by people to act. His continued employment comes from people who think he's good at what he does and want to work with him, nothing more nothing less.
He was on of the UK's most acclaimed actors before Doctor Who came along and remains so long after it.