That was the idea... to show AJ as a spoiled lil rich kid.
Remember when he was failing at grades and wouldn't be able to make the colleges they wanted for him... Tony goes out and buys him a new Truck and then says you better get your grades up. The same episode where he went to NY and then to a party instead of sleeping at Meadows.. the one where he also said F U to his Mom. He was spoiled.

But he also had the mean streak of his father.