Goalie should never be held responsible for a loss. Yes they will have abad game once in a while and you can't cover it up as easily as a field player, but they should not be singled out. At this age all players are still developing. With goalies it's extremely difficult to say how they will be in a few years. I don't think you can say any goalie will be great from this age group right now. Let it play out, this kid your singling out may be the best of the bunch in HS. You never know.