Could you post some specific examples of what to watch? There's a lot of content on that channel.What I'd say in regards to Tucker's insider knowledge is to study Cryptids, especially Sasquatch. I have been studying such phenomena for the past couple of years. The snowballing number of people who have witnessed these creatures, their otherworldly abilities, and who've experienced a government cover up of cryptids suggests strongly that's what Tucker is referring to.
Before you dismiss this post go listen to a few accounts on Sasquatch Chronicles YT channel (Survivorman channel hosts some of the best accounts and Les has had his own experiences). I've listened to hundreds of hours of accounts and am of the opinion these creatures are biblical.
I'm not a believer or a non-believer in things like this but I certainly find them interesting, and entertaining at the least.