The comments in here are oddly fatalist about the whole thing. We put a lot of trust in airlines; and not just in safety or to get us somewhere, but we also give them an unusual number of legal protections once we're in their care.

When the drama first started I kind of wrote it off: "this must have been a misunderstanding compounded by a single employee's stupidity". But when I found that it was not only condoned, but fully defended by the company top-down, red flags went off. Then, the inevitable outrage led to past stories resurfacing, with a pattern of absurd insensitivity (abused dogs, broken guitars, sexist clothing policies, etc). Then, I started remembering some terrible experiences I've personally had on United. Like the time they left me stranded in India for 2 days (rumor is the staff did this on purpose to protest some new policy around maximum flight times), then made me wait 3+ hours to get approved for a hotel room at 1 am even though I was flying business class (which would have been wrong even if I wasn't business class!) Or the time a gate agent lied to me about contacting a connecting flight, leading me to miss an entire day on my Thailand trip. I have many more of these.

My point here is that United really does seem to have ingrained issues that directly harm their customers. This toxic culture doesn't benefit them in any way, but if nobody cares they'll have no incentive to stop.