[pclmulqdq]

I will point out that in the ideal scenario you're talking about, there is probably a next sentence after "at that point, they're just fully incompetent." That next sentence involves some real-life consequences of that incompetence. At that point, the postmortem is not really blameless, the blame is just one step removed.

I agree that what you are describing is the ideal, but I don't think it happens often. What I have seen more is that the postmortem turns into 10 different open bugs, 5 of which (usually bandaids that stop that particular failure mode) get closed quickly and the rest of which (often including the real solution) get put off until the next crisis.

Ownership is really important, but hand in hand with ownership is responsibility. That step is missing in many orgs today.