One of my favorite things about the National Treasure Cinematic Universe (two movies and a TV show) is the existence of characters that I like to call "treasure grumps". Their role in the story is to warn the main characters that searching for treasure is a terrible way to spend your time, and can only lead to personal and familial ruin.
Meanwhile, here in the non-fictional world, an estimated 20-30 million dollars have been spent excavating Oak Island with absolutely zero treasure of any sort found.
Right, the treasure grumps often have a point!