How many players in their 20's ever got to play with similar team mates like KG, Pierce and Ray Allen in a situation like Rondo's?
I'd guess a lot more than you think. But are you talking about 2008 big three or the fringe all-stars of the last few years?
Has there ever been an All Star point guard that's as poor a shooter as Rondo from the FT line and 3 point line?
Possibly not. But a 4-time all-star he is. He made those all-star games because of his overall level of play, where he does many things well enough that he's still one of the top guards in the league in spite of his shooting. It's not like he made 1 team as a fluke selection.
I think a better question is, how many point guards have there been that would have been regular all-stars if they shot (and hit free throws) like Rondo? How many point guards would be regular all-stars if they never scored more than 14 ppg?
It's true that he's not a great shooter. It's also true that he's been one of the best point guards in the league for a while. It's useful to notice what he does poorly, it's equally useful to notice what he does well and how well he does those things.