Wow, you really are an idiot.
Where there's smoke there's fire. And where there's pain, on an arm you're spending 10 million dollars a year for, there's at least a little something out of order -- maybe something that can be played through but maybe not, and due diligence in that situation only makes sense.
The real problem here isn't the babying of Joba Chamberlain -- who is hardly "babied," as they stretched him out in midseason at the big league level after grooming him for relief, a conditioning issue that might have helped this injury happen.
The *real* problem is that Cashman rushed his kids and did not provide a protective layer of veteran pitching for the first few months of the season to let the kids prove what they had in AAA.
That's the most profound Yankee screwup this year. You DON'T throw kids into the fire as Plan A. Sometimes you have to because Plan A fails (see Curt Schilling's shoulder) , but you don't make it Plan A. Not when you have the kind of resources the Yankees have.