This isn't about whether the father is right or not. This is about the father trying to save the future of his son. A male child who is living with his parents and is into gambling may still be less than eighteen and that is underaged betting. Imagine if this boy starts gambling at this age what belongs of him and his future. He should be out there learning a skill or acquiring some education that will improve his odds at succeeding in life and not the meagre money he has won from sports betting.

If the dad didn't do that, then he would have passed a message to his son that it okay to gamble and waste his time at a betshop when he knows that he should be out there chasing his dreams. Great parenting  if you ask me.