That's easy to see Doc is a bad offensive coach, this team should not be dead last in offense with the guys we have.
How much is it a problem of coaching vs a problem with the overall talent on the team?
I think that the NBA is a talent driven league. You need superstars in their prime in order to win a title.
I think the Celtics roster is not that good. But, if they can get their defense in order, and get improved play from Bass and Terry in particular, they enter the teams with a 5% chance at winning the title category.