Crabbe is way too passive. He often passes up wide open looks, especially in the 4th quarter. He'd rather defer to Dame or C.J. than take a shot with the game on the line. And don't try to blame this one on Stotts, I often see him encouraging Crabbe to take the shot.
Also, he can't create for himself. He doesn't have a quick release off the pull up, like Dame (or Steph, etc.) or a step back jumper, like Wes or C.J.
So, passive player who can't create for himself == fewer shot attempts == fewer made shots per minute.
BNM