If you've got a serious condition, you really do need to have a patient advocate, whether that's yourself or a family member or someone you're paying to fulfill the role or some combination thereof. The medical systems I've encountered for non-trivial care (US HMO, US PPO, Belgium, Norway) just aren't designed for holistic patient care. Each department does their own thing, and it's just luck if there's someone watching over the whole process from the individual patient's standpoint.
Perhaps you took exception to the comment about looking for an expert instead of a newbie (a resident, in the text) working on the author's 9-month-old. One could argue that that's a different issue than the general need for a patient advocate. Fair enough. But if I were watching out for my 9-month-old, I'd definitely want to ask about the track record of each of the doctors in the room. I mean, sure, new trainees need to practice somehow and all, and there's a tragedy of the commons there. But I certainly wouldn't brush someone off as "absolutely entitled" just because he wants the best care he can get for his 9-month-old.