This BBC article is interesting:
Stockton Rush wanted to be known as an innovator. It didn't seem to matter how he did it.
www.bbc.co.uk
So it appears the CEO piloted the sub on every journey it made, using a game controller. To me that says the guy had issues with delegation and control. Hope the keyman insurance will pay out.
But there's some interesting snippets about the approach to engineering design - the non-standard design, the use of non-standard materials but at the same time the use of off the shelf components in unintended ways.
To me this all speaks of an attitude 'you can't tell me what to do' and a desire to get a working design no matter the cost or safety.
If the hull imploded but not on the first trip this thing every did, it suggests some kind of
fatigue failure.