Well, if you are not familiar with the listed incidences, then you are spouting about issues your are clearly not knowledgeable enough to discuss, nor does you continual union rant hold any water. (Not that I am against unions, just your silly rhetoric) You may well think, based upon your impeccable skillset, that this industry is replete with incompetent captains, that is your judgement, so be it, but I am sure there are many that would argue that point with you.
As for the "dead" airplane issue, I have yet to hear anything about that, that is other than from unreliable news account. APU's are installed om most modern jets, so I am sure you have heard about them, if not, they supply electricity and conditioned air on the ground. Would have been certain they had those at UPS, but what do I know.
Not once did I dismiss the argument, that it was unacceptable to hold people on airplanes that long. I found it to be a sad lack of customer service. What I did take offense at, was the potshot at the jetblue pilots and your silly union rhetoric. Union or not, if there is no way to get the people of the airplane, then there is no way to alleviate the situation. I have little doubt that those in the pointy end wanted to get off the a/c just as bad and that they were pleading with ops for just that.
Maybe take a lesson from Bill O, blame management for the foul up, not some hapless pilot who just got caught in the shat!