He doesn't have an excellent understanding of how a healthcare system works. Nurses typically take care of at most 4 patients. Physicians are typically taking care of much more than that. Moreover, they run on a shift. If we take 45 minutes to explain something, something another patient needs will have to wait. That is not the case with nurses unless another patient needs something immediately. The longer we spend with people, the less time we usually have to give to somebody else. Moreover, if we spent that much time, we'd never leave the hospital. Again, not true with nurses, they leave when the clock stops.
You have to understand the different roles people play. Of course the nurses will have more time to spend with you, they have to be in the same 50 feet all day long. They are upset when they are split on different wings of the same floor. We are running all over hells half acre to get places. Moreover, their cost to spending time with you is minimal. For us, its a matter of whether we want to leave the hospital ever.
And yes, the nurses did not go into medicine to get rich. But then again, they probably didn't feel like studying or working that hard either.