Air travel is, generally speaking, the worst. The last flight I took made me feel like livestock. Economy class felt more like freight class. It's just not a comfortable, dignified experience. But that doesn't mean that the flight crew want it to be an uncomfortable, undignified experience.
It's best for everybody trapped in an aluminum tube 30,000 feet above the ground to get along as much as possible, and the flight attendants do their best.
But there are certainly some things that they shouldn't have to do to keep everybody happy.