Love this post but I want to add that, though “he kills them” is a very popular theory, in the original novel - J.M. Barrie's Peter and Wendy - it’s simply stated that Peter “thins out” the Lost Boys when they grow up, but gives no elaboration to how. People simply assume he kills them because the same paragraph mentions Lost Boys being killed on the island (y’know, the island with murderous mermaids and pirates and other very not-safe-for-children things.)
Though the second Peter Pan play (based off Barrie’s original) says the Lost Boys are banished when they grow up. It seems there are many theories as to what happens to the Lost Boys, but Barrie himself wanted to keep it either secret, or up for interpretation.
So yeah…I know no one asked but I just wanted say that, because “Peter Pan murders the Lost Boys” is a theory I’ve seen thrown around a lot without correction. It’s an interesting take, and certainly one I can see Peter doing, but it’s not canon.