If he is completely antisocial, then maybe. But if he isn't into the party/drinking lifestyle while engaging in some activities outside of footy, then that's a good thing. It helps him stay focused.There is a work/life balance thing and if you overdo something you burn out and lose interest if you don't balance that out with some fun. Weitering has trained, trained, studied footy, trained, played footy, studied footy and played footy some more.
As a teenager that played basketball for school twice a week, club basketball once a week, representative basketball for Vic and Australia along with all the training whilst also watching a lot of basketball I was sick of it by my early 20s and following some injuries stopped playing altogether.
It's one thing now I tell my brothers and friends to keep an eye on their boys that they don't overdo it and burn out. My nephew is in the Swans academy and he's having a light summer for a change (no formal sports - just surfing and swimming for a break from it all). Weitering just looks like a kid that has never been to parties, never had a drink and won't get into the banter of a footy club. I see some concerns there.
There was a documentary about an NFL player - son of a former Oakland Raider. His father trained him from day dot to be a quarterback like a robot. He trained basically every day and was a great college player and was taken in NFL. By this time though he was burnt out and got he big money - he went off the rails and became a massive junkie. 'Twas a shame as he had real talent but lost the desire.
Balance is important, but nothing suggests to me that there is no balance in his lifestyle.
To me, I see a well spoken and professional teenager that prefers not to engage in social activities that can contribute to antisocial behaviour.