Yeah, I'm with you to a certain degree, then I'm not sure I'm on board. I think that the issue I have is with too broadly construing the responsibilities one has in his job, and then thinking he must exercise a proportionate amount of discretion as a result.
We can all agree (I think...hope) that what Rob Ford likes to watch on TV is up to him. His job shouldn't have any bearing on that--it's in the privacy of his own home, it's on cable tv, etc. etc. But we can also all agree that how he votes on council does have a bearing on his job.
It's the middle point where things get murky. Though I don't think a CEO can get bombed at the company's Xmas party, I think he can get bombed at a private one. Likewise, I don't think Ford can get bombed at a public gala where he is attending in the capacity of Mayor. But if he hits up a pub on New Year's and has a few, in the capacity of a private citizen, that's his business.
As for the head of the hospital example...I spose here our intuitions just differ. If one wants to spend his personal resources to seek healthcare outside of the system, criticizing him for it is, to my mind, just an unfair infringement on his autonomy, a value that I think outweighs whatever responsibilities he might have to his job.