Survivorship bias? If another group of boys failed to form a successful team with enough skills to survive, they wouldn't have survived to tell their story. So it's not surprising that the author only found a successful story. We don't know what happens to the thousands of boys who go missing every year.
> We don't know what happens to the thousands of boys who go missing every year.
These are not lost kids surviving islands. These are kids escaping abusive situations. They typically become homeless, get money either by small crimes or sex work. They eventually end up in prison fairly often.