Wow. I'm glad I'm not where you are. Morale certainly does matter. If morale wasn't in the shitter then all this resiliency BS wouldn't be necessary. High morale and suicide rates are inversely proportional. The happier someone is to come to work every day and do their job, the less likely they are to kill themselves, and it doesn't have anything to do with how many demands are being placed on them. The most satisfied I ever have been in my job is a period when I was flying 18 hour sorties with 24 hours between them. It was a kick in the face, but I couldn't wait to get up and do it again because I was enjoying what I was doing and felt that it was very rewarding and worthwhile. Leadership was singularly focused on getting the Job done (not "the mission" which has become a trophy word to hand out to EVERYONE). Queep was non existent because it didn't matter, and we were loving life. That's the kind of Air Force we should be fostering.
A commander should never have to tell their troops to "suck it up." Continually putting troops in a situation where they must "suck it up" against their will is a sign of very poor leadership. We are often asked to do some very stressful, demanding and often dangerous things. When they are meaningful I can't think of a person alive who wouldn't gladly "suck it up" without ever having to be told to do so. It's when tasks become menial, degrading, or worthless while still being stressful, demanding and dangerous is when you run into a situation where people must be told to "suck it up" because leadership has failed to prioritize tasks and manage the important vs unimportant things, and the people suffer as a result.