Actually it is, just because you've not heard it doesnt mean that he is making it up!
I've met miller a couple of times, never really came across as anything but i decent guy, although i have no idea why that would affect his ability to do his job.
I don't think anyone really knows how much work miller puts in behind the scenes, in my opinion his is a job that can look easy to the casual observer but in reality is anything but. i get the impression you are letting your opinions on miller effect your judgement on him as a professional