Let's start with the fact that this guy made a completely insane all-in and now fell into some kind of depressively aggressive state. He must understand that he and only he is to blame for what happened to him. He should also understand that many people would not have made such an all-in, but acted more thoughtfully.
He should definitely not influence others after such a failure, because gambling does not ruin the lives of all people, but on the contrary, sometimes it is a great way to distract from problems in life. And relaxation contributes to the fact that diseases that appear during stress, such as stroke, recede.