I guess it just goes to show the era Ray [mostly] played in. People often knock Antoine Walker around here, but many of the league's best players back in the day were high volume, low efficiency scorers (see Allen Iverson) - at least guards/wings. Then all of a sudden, analytics became a thing and we are where we're at today with Smart outshooting one of the best shooters of all-time.
Either way, good for Smart for being more judicious with his shot selection. A Marcus Smart who can shoot 3s is infinitely better than one who cannot.