Platitudes aside, you're shifting your point with every post. And Jobs did not pass the buck, at least publicly. Holding people accountable for their job is not the same as shirking responsibility.
I agree with the "Holding people accountable..." sentence.
But you said
Except that this situation wasn't a problem of MobileMe living up to its potential or sucking or being a disappointment. This was a problem with the scalability of the service at launch. A problem not apparent until wide release.
Failing to scale is exactly "not living up to its potential" and "sucking" and "being a disappointment".
And "A problem not apparent until wide release" implies a wholesale failure of QA and project oversite from the bottom to the CEO.
Your point is shiftier than a man in a trench coat offering candy.
See immediately preceding response....
(Do you like dark chocolate or mild chocolate?)