The practice wasn't "light contact". It was light non-contact. Consequently, I don't see this as a football death at all. The exact cause of death is still being determined, but I see this as likely an exertion death, and one that possibly could have occurred in any athletic endeavor - basketball, baseball, soccer, cross-country track, etc. Heck, it might not even be athletics-related. The boy was discovered unconscious on the ground. He could have died from a lot of different causes. Does that make it any less sad? Of course not. But to point at this case in an indictment of football I think is extremely premature.
I heard someone once make the case that this game that we love originated as a college sport played by physically grown men. It wasn't designed and isn't healthy to be played by young boys (and girls) whose bodies are still growing. Valid argument.