> If a culture of finger pointing and shaming individuals or teams for doing the "wrong" thing prevails, people will not bring issues to light for fear of punishment.

Not only this. I had a particularly toxic manager many years ago and during some major disaster he was fuming around the office demanding to know who was responsible. We had to spend time determining that instead of how to fix the issue. Someone might have been responsible for initiating the disaster, but he was responsible for extending it (substantially).