That was one of the things Jones touched on in that article I referred to. Nobody is really happy when they casually stroll up the court... It' one of my biggest pet peeves, to be honest.
Part of it is still the physicality. He's going to find it tough hanging in the modern league as a pure 4. He better start working on a 3 point shot because it's a tough road ahead if not and he can't be a full time 5.
See, this is where Walton has to recognize options. This is probably a unit where you can get the ball to Barnes on the block and see if he can draw the defense or get to the line. Plenty of spacing for him here.