These numbers clearly show that playing in the summer league is really not benefiting these young players much. The play is disorganized, it doesn't appear they are learning any system or fundamentals, it may hurt their confidence, and there is a risk of injury. It makes me wonder if teams will either just quit the summer league or restructure it so it is more beneficial to the players and the teams.
Taking the Celtics, I am not sure this helped Smart, Olynyk could have done without, Young didn't even play, and I am not sure Pressey needed it. It is a chance to discover a non-drafted player that was overlooked and could be the 15th guy on the team but is it really worth it for that?
Seems to me it would be better to just start training camp a week or so earlier (with young players only) and invite some of the non-drafted players in. Maybe even have a couple of scrimmages against other teams before the vets show up. Then just roll into regular training camp with the veterans and whoever is left of the young players.