I don't think anyone can deny that there are times in games where Rondo makes a bone-headed move, passing when he should go for the lay-up or forcing a pass and getting a turnover.
It happens.
But guess what? Those stupid mistakes happen to EVERY player. What about Russell Westbrook, who some people on this blog would prefer to Rondo? He is terrible at learning when to shoot and when to pass. Hell, even Lebron James makes mistakes.
Focusing on these mistakes at the expense of the rest of the game is an incredibly foolish way to evaluate player performance.
Unless somebody cares to provide some PROOF that Rondo has cost us games by passing up shots, or that he makes more of such mistakes than any other high usage player, then I don't think this is even worth arguing about. As has already been posted, our record is significantly better in games where Rondo gets 10+ assists.
I do expect Rondo, as he enters his prime in the next couple of years, will get smarter with how he plays, and we will see a spike in assists and a decrease in turnovers, and probably a scoring spike as well. But callously dismissing the player's performance because you can't seem to get over a tiny handful of bad plays says more about you than it does about Rondo.
(I mean, come on, I am as willing to criticize Rondo as anyone, but I can't think of more than a half dozen plays this entire season where Rondo has made a terrible pass-out-of-shot decision)