Demanding perhaps, but not questionable. It's just the nature of the industry. Not an apples-to-apples comparison, but look at combat medics for contrast during wartime. There are limits to what humans can do, but the 120-hour workweek in a heated-and-cooled hospital does not bump into those limits.
Maybe it would be 'better' if that wasn't the case, but it's simply what is.
Maybe it would be 'better' if that wasn't the case, but it's simply what is.