I'm sure that if you were to visit the bulletin board site for the clothing industry, or indeed any andustry, you would find an equal volume of "moans"
Aircrew (IMHO) tend to moan about aspects of their job because it matters to them. Many people
really want to be Cabin Crew or Pilots, often since childhood. To get there, they have to meet some stringent standards and see off many competitors. Pilots in particular, often invest a lot of their own money, and certainly time, in achieving their position. For all crew, having "got there" it can be disappointing and frustrating to discover that so many aspects of their professional lives are managed (badly) by people who have little or no experience and understanding of what is required, and do not match the contribution and investment in the industry that crew have made.
Wow! I feel much better for getting that off my chest. I think perhaps, another cup of coffee and a cigarette and then I'll go out and walk the dogs for an hour.