It's just a reasoning for him to take his losses back easily. It's always been said to gamble responsibly.
And whether that guy has money or not, I think that whichever situation he's in, he'll do this to annoy the casino and will still gamble irresponsibly.
He's not vulnerable, he's even taking advantage of the situation but no matter how hard he try, he'll lose this battle.
This is giving him the spotlight and bad reputation to himself and his family.