Film director James Cameron has expertise in designing and testing these submersibles, and he has many criticisms of the design of the sub that imploded, and of the hubris of the CEO who ignored repeated safety warnings from the diving community. He also mentions that the sub seems to have been attempting to resurface when it imploded, suggesting that they were aware the hull was starting to fail.
There’s also that old adage about experts being particularly vulnerable to believing they are smart and capable in other fields. It seems this is particularly prevalent among engineers.
I’ve also run across it frequently from doctors, who have that same impulse, plus they had to start specializing basically their sophomore year of college, and then they get cultural feedback that they are the best and brightest. They seem especially prone to stupid business ideas that, if they weren’t stupid, would let them go from extremely comfortable and locally influential, to being the powerful magnates that their intellect and service clearly entitles them to be.