He needs self control and maturity more than he needs bankruptcy. Bankruptcy will haunt you for a long long time. You end up having to live cash in hand for longer than the 7 years it stays on your credit record.
Just some advice if he does file bankruptcy. That is to include EVERYTHING AND EVERYONE that he can think of on that file. Most lenders have insurance that covers them should a borrower file bankrupt. So in addition to the lending company that you are in debt for, you BETTER find out who their insurance company is and include them on the bankrupt file or else the insurance company will COME AFTER YOU AND YOU CAN'T DO A THING ABOUT IT. THEY WILL GARNISH ANY WAGES YOU HAVE. Once you file that claim, you better have ALL aspects included because you can't go back on down the road and change or add to it.
If company ABC is backed by XXX Insurance. Then when you file, XXX insurance has to pay company ABC because you listed them in the file. However, you either didn't know about or didn't list the XXX Insurance company. Although they have inherieted a debt against you from Company ABC, unless they are included in that original claim, you have no protection from them. They can come and claim whatever the money was lent against. Car, house, etc....