K Smith raises a fair point.
On a sliding scale of success over time during his tenure, Ainge was far less likely to make the right pick than the wrong one in the draft. In other words, it's far more likely the Celtics wouldn't have taken Bane than that they would have with that pick.
So, we'd probably just be holding a roster spot for a stiff, instead of heralding the success of Bane -- despite the painful optic of looking at Memphis' successful use of that pick.