Is there any starting point guard in the league that shoots free throws and 3point fga worse than Rondo?
Rondo has the worst free throw percentage of any starting point guard in the NBA, at 56.8% this past regular season. The next worst is Mike Bibby, with 62.9%. The only point guard in the entire league worse than Rondo at 3-point shooting is T.J. Ford (but I don't think he starts anymore).
On the other hand, Rondo is still the 16th best point guard in the league this past year (he was in the top 10 the past two years). He has the second-best assist ratio, after Jason Kidd, and 4th best rebounder at that position. He's also handy at steals, and is on the All-NBA 1st Defensive Team this year.
So, yes, it is embarrassing that he is the worst at free throws, 3 pointers, and is very low on the list in true field goal percentage. That said, it is a testament to his skill that he can still be considered one of the best point guards in the league despite that handicap.