Thanks for the love, back at you… I am no defender of his..
Manning would be hardly the first guy to try to take public credit for things his superiors actually are responsible for. That kind of endzone dancing feels good in the early days…
I agree he needs to go. But I think that guys who take the kind of responsibility you are looking for are few and far between, and it's not fair to expect him to quit. He has a contract, he has a family (not that that matters to my point)… it's MLSE that need to move him out, for the reasons you state (I would have a few more).