I actually think it's an ideal situation. He'll get to live, work, sleep, eat, play sports, etc. etc. along side his peers. No palaces, no servants, and no press for most of the year. He'll live in exactly the same way, in the same dorm rooms, same rules, same restrictions, as everyone else.
A regular routine, plus total privacy and security, which means a chance to feel just like everyone else for a change, which will give him real stability throughout his adolescence. And he's close enough to his parents that he can pop home for an occasional Sunday lunch if he wants to.
He gets independence without being too far away, and from now until he finishes university is a golden decade of his life where he has a chance to just be himself, make friends, and have the closest thing there is to a normal life and routine that he will ever have.
For many children, boarding school takes them away from normal life. For Prince George, it is a chance to be part of it. Makes total sense to me. I hope he's really happy there.