Sure. But there are also plenty of very necessary jobs which are not permanently engaging.
Airline pilots tend to do love aviating, but spend most of their flight standing by in case the autopilot goes awry. Most medical doctors don't have a massive catastrophe happening around them all of the time. Artisan bakers still have to knead dough.
All in all, most work generally is boring rather than fulfilling.
I think in all your examples aspects of the work may indeed be incredibly boring, but that doesn't mean it's not ultimately rewarding, fulfilling, or motivating.
At least in the case of pilots, doctors, and bakers.
