Plastic frames break.
Once he is out of Fort Lost in the Woods, maybe he will have the option of getting the Medium Ruck……. Smaller, different frame. Preferred by many, as the standard Molle ruck is gigantic and not great.
Or if it is allowed, look for a used Tactical Tailor MALICE ruck. Giant, many exterior pockets……. Welded metal Alice style frame that isnt breaking,