>I'd love to see an example of such an accepted accountability at least once in my life.
I think that's the point, you wouldn't see it. If a good manager gets unreasonably or unfairly reamed by his boss, he's probably not gonna tell his team about it, because it would be a blow to morale. If it was indeed the team's dysfunction, he'd try to improve it.
When I "decided to move on", that included deciding that management was likely not in the cards for me again. Companies that have IC staff+ roles are what attract me now.
I've seen it before. After that manager stepped in to help me, I would've stepped in front of a bus for him. That is the one time I had a manager like that in my entire career.
I think that's the point, you wouldn't see it. If a good manager gets unreasonably or unfairly reamed by his boss, he's probably not gonna tell his team about it, because it would be a blow to morale. If it was indeed the team's dysfunction, he'd try to improve it.