The ironic thing about your reply is that it is crafted in exactly the type of management speak that executives used to convince stakeholders in both occasions.
"absolve relevant parties of their responsibilities" - what relevant parties? What responsibilities? It sounds great and responsible, giving a good impression of dismissal of the point made, but the wording is so general as to be impossible to act upon - just as with "a bank". I'm sure standardised checklists were ticked, committees reviewed the decisions and came to the conclusion that it was best, the board was satisfied with the new direction taken by the CTO's organisation, and the shareholders happy with the cost reduction at the time as described by the board. To paraphrase Thatcher, what colour trousers do the relevant parties wear?
You see this defection pattern everywhere. For example, the never ending stream of useless new features in most Google and some Microsoft products which coincidentally get slower and buggier every year, because you can get promoted for the visible addition of a feature as a PM, but it is much harder to prove that getting the Gmail app load time down by 70% has stopped the feeding of your best power users to the competition (Calendar is too easy a target for criticism).
The classic defector on the tech side is the "ninja rockstar developer" whose prolific output of code and visually attractive but functionally superficial features is matched only by the amount of frustration generated after they are promoted somewhere else or changes jobs if it doesn't happen fast enough, and the rest of the team has to deal with the technical debt and new, unrealistic user expectations.
Security is another good candidate for shortcuts, since there is no visible upside to good security (maybe you were just not attacked) and tons of downside for taking responsibility since you make yourself a visible scapegoat for blame when a crisis does happen.
And note that none of these examples are in "move fast and break things" i.e. "do illegal things and hope they become legal ex-post" territory! I personally take great pains to understand these dynamics so that I can avoid them in my own company, which is a matter of survival.
