Sorry, I disagree with that. Any actor will tell you it's the fans that made them. Now I'm not saying an actor should make his decisions on Fan Rule, but they should take them into account. Supposedly, CE had a problem with PRODUCTION PEOPLE on DW. They are all gone now, so that shouldn't hold him back. He liked Moffats' episode(s), so that shouldn't be a problem. What is the problem? Was SMs story that CE read no good? Did it hurt "the character"?
So yeah, actors owe their careers to the fans. Unless this 50th story was so distasteful and the people he would have to work with are a-holes (for him), his decisions sucks.
Again, yes, actors do owe it to the fans. That's why they're there. And that's why they become big, -- or don't.
P.S. This doesn't mean I have any problem with CE, just his decisions concerning DW. Really, get over yourself.