I'm not sure people appreciate how little talent Doc has to work with here.
By my estimation our current roster has exactly three starting-caliber NBA players: Pierce, Green and Garnett. One is a borderline All-Star (Pierce), one is a solid starter (Green) and one is a superb but old and injured defensive specialist who can give you around 20 minutes of solid effort before running out of gas (Garnett).
Then, we have three or four rotation players who should be coming off the bench on a legit contender: a defensive specialist who can't shoot (Bradley), an aging sixth man who can't play D (Terry), and an undersized but hustling PF (Bass). Lee is a legitimate NBA player (but not starting quality) mired in the worst slump of his career.
Beyond that we have no one who belongs on an NBA court during the playoffs. No one. Crawford is over-achieving for us but just to put things in perspective, he was given away by one of the worst teams in the league halfway through the season.
I would make the claim that there is not a single roster in the playoffs this year with less overall talent on it. LAL might have been close (once Kobe and Nash went out, but not before) and they just got swept. If someone else can name another, I'm all ears.
Seriously, go look at the roster for Houston, or Denver, or the Clips, or Brooklyn - all of whom are facing first round exits - and make an honest assessment of how talent on those rosters compares to ours, from the top all the way down the bench. Tell me whose is worse.
Heck, even Milwaukee compares pretty favorably to us, particularly in terms of bench depth. There's another thread on this forum right now proposing Sam Dalembert as a "realistic big" who could "fix our rebounding and size problems" - and he cannot even get off Milwaukee's bench right now! He's played 9 minutes in four playoff games.
In light of all this, please tell me how it is that you believe Doc is somehow the primary reason for where we are right now.