Here is the key with these young guys vs. the previous round of young guys under Doc, these young guys didn't take advantage of their opportunities.
Remember when players like Jefferson, Gomes, Perk, Rondo, West, Powe, and Davis were not playing, we would ask why. But when they got the chance, they used it to earn a rotation spot. They played great. It allowed us to knock Doc for not getting them in earlier.
Pruitt, Walker and JR are more in line with players like Green, TA, Banks, Allen Ray and Telfair. When they got their chances (except JR which also says something) they didn't earn a rotation spot.
So if they can not step up and take a rotation spot, Doc should not play them.