The world is dynamic. There is no one way rule for everything, so there is absolutely no reason to be very rigid in life.
What am I saying in essence. I have read somewhere in the forum, where a poor Christian father rejected a huge win from by his son from gambling because his faith doesn't support gambling. The amount of money involved would change the life of the family but the man rejected it. I blamed the man very well because he was so rigid with himself. He even refused to acknowledge that the God he allegedly serves might be the one that authorized the win.
So, comparing the situation to the one in this thread, if I were the parents, I will used my KYC and withdraw the money and plan how the money will be spent.
Everyone should have principles and standards, because man is nothing without them, if accepting money from gambling goes against his principles as a man, then I wouldn't blame him for doing so, sometimes maintaining one's principles I believe is more than any amount of money, this doesn't only apply to religious beliefs and practices, it goes beyond that.
Again, I don't believe there's any amount of money that can change a person's life for good, it is how those people choose to manage that money,l that'll determine how long it'll stick around. I've seen people win millions from gambling and some of them are no longer millionaires today, some has even gone broke, so it's not always about the money but the mindset and principles.