not at all concerned about it. Especially as most of his shots have been 3pt attempts, you have to look at efg not overall fg% - his numbers still won't be great, but not so bad as to be concerning for a defensive-oriented rookie.
The Kidd comparison is interesting, I think you sorta have to conclude that Kidd had a bad rookie year compared with his career. Smart has been doing so many things well, it seems ridiculous to be concerned about his mediocre shooting numbers. Especially since he's been improving, and getting to the line more too. And at least he prefers bricking 3's to long 2's, it keeps his efg% afloat.