Sometimes if you have a good eye, you can catch how some of these treasure hunting shows stretch reality. To me, that can be the most interesting part of the show. Sort of like spotting bloopers in shows or movies.
I remember one of the shows (Beyond Oak Island) visited a small lake not long ago. Can't remember the details about the folk lore, but the show focused a bit on two mysterious marking going down a small hill to the lake. Of course, there had to be some unworldly explanation for the markings and something at the bottom of the lake. Then in another scene not related to the earlier, you could spot just for a second, posts from a pier long since gone in the same spot. The 'mystery markings' likely were vehicle tracks from a couple of guys going to their favorite fishing pier ages ago.
Another show, not related to Oak Island, had to do with something about a bank in a town if I recall correctly. Something about houses and tunnels between them, and maybe a tunnel going to the bank vaguely come to mind. I recall the crew standing in a basement and someone was explaining how the wall appeared to have different bricks. Clearly that was a sign there was (or is) a secret tunnel entrance going to the house across the street. The problem? It was an old house, the kind where the basement (below ground) is only 4 or so feet, with the rest above ground. What gave it away? A basement window right next to where they were pointing at the wall. Then a scene where they are looking at the ground, next to the side of the house and you can see the 1st floor was about 3 up from the brick foundation. So either the tunnel was for a 3 year old bank robber, or you had to traverse on your stomach. Or maybe somebody just patched a bad spot in the brick wall. But to the producers, digging a tunnel in 4 ft. of dirt under a street to another house made more sense than just stashing some loot in a wheelbarrow and carting it across the street in the middle of the night.
The SkinWalker Ranch is another one when they get out their RF electronics and start looking for signals. I'm an RF engineer and when they fire up their 'spectrum analyzer' (i.e. a $20 USB receiver stick from Amazon), it is truly cringeworthy to watch.
I think I have more fun spotting these moments than watching the treasure hunting aspect.