Why are so many people here obsessed with Marcus Smart's supposed lack of development? I don't get it, but my best explanation is that we haven't had a lottery pick that we've developed all the way into his prime since Paul Pierce, and somehow we've forgotten what it entails. I'm sure this also helps explain why some people on this forum insisted that 19-year-old Jaylen Brown was a "bust" after two summer league games.
Marcus Smart last year was a 21 year-old 2nd-year player who played 27 minutes per game on one of the best teams in the conference. He was arguably the 2nd-best Celtic in the playoffs and nearly won game 4 against the Hawks single-handedly, in part by shutting down the Hawks' star power forward who had gone off for 40+ points to that point and no one else could guard.
What are we so upset about, exactly?
Chauncey Billups was 21 years old (hey, same age as Smart last year!) when the Celtics decided they'd seen enough in the '97-98 season. He was only shooting 37% from the field and 33% from 3, and looked less than polished when running the offense.
Oops!
Watch closely and you'll see, for instance, that Smart made big strides in running the offense last year, especially in the pick and roll. For instance, he learned how to change speeds, use a hesitation dribble, and make the right pass as the primary ball handler, things he struggled with much more in his rookie year.
Smart's shooting percentages have been low, but basically everything else was there for a guy that age. If you want a player who can guard up to four positions, rebounds well, makes the right pass, competes like a mad man, AND shoots the ball well... then you are basically asking for the guard equivalent of Anthony Towns. In that case, yes, you should expect to be disappointed.