What if Kane's a sensitive guy who, being behind the curve from the outset due to missing summer, was lacking confidence at the outset and started doubting himself, and was adjusting to, perhaps, a new way of life, academics, a hard-nosed coach, and the literally infinite number of other potential personal issues we are not and never will be privvy to,,, and he voices this to coach and coach decides "maybe with this guy we need to bring him a long more slowly so as to not completely shatter his confidence."
Do we still want to argue "this is negligent, coach not throwing him to the fire!"?
Humans are complicated.