I guess I'll wear the brown helmet here and say that Mesa has sucked for long enough the vast majority of people there knew what they were getting in to. Which isn't to say that I wasn't (nearly) one of them. Just that I don't think I'd have a complaint coming if I went to Mesa and it went out of business. Gambled and lost.
Regardless, legitimate complaint or not, it sucks for those employed there. Look at the bright side, when and if (JO has nine lives) it does go under, it might encourage mainline companies to pay a little more and get reliable service from companies that treat their employees as more than indentured servants.