Lovely story! That said, lord of the flies had at least 20-30 boys involved, whereas this group was six boys who were already friends. More is different.
(Not arguing reality would go the way of lord of the flies, merely that the example above is not definitive. But boy would I like to see the movie they made!)
Keep in mind that the book that is from, Humankind, while a hope filled book (I enjoyed it thoroughly), makes the point that when we get together, the bonds between people can lead them to do horrendous things to others. Our power to cooperate is our superpower and our kryptonite.
I don't think children now would have the trust enough to cooperate.
In real life, the boys stranded on a deserted island made a pact to never quarrel, and kept that pact for a half century.
https://www.theguardian.com/books/2020/may/09/the-real-lord-...