This will definitely be a problem for him, not only in gambling but in real life. When he has to face dark times with little earnings and a lot of expenses, how will he do if he doesn't know how to manage money properly? He will get into debt and this will lead him to a self-destructive spiral.
That's what often happens to gamblers with small incomes. They take too big a risk to gamble. Of course, they don't have bankroll management and just enjoy the game to get lucky. If not controlled, then everything can be lost.
All is different from rich gamblers who do have good financial management. They know the limits of the risks they can take. Although it is possible that those who have a lot of money will also bet impulsively.
Although there is a possibility of emotional gambling among the rich, but the number is very small, we usually do not see rich people gambling emotionally, there is such an effect among very few rich people, but emotions work deeply in middle class or poor people, because a poor or middle class person is never strict in managing their money, they naturally spend a lot of money without any thought. Despite their limited income they do this type uncontrollable activity, and such activities can definitely affect them in a very negative way, but they do not want to understand this in the first place, awareness and self-control in financial management in gambling are the most important things, without these, major disasters can come very naturally, so this matter should not be ignored in any way.