This guy understands blockchains like Deepak Chopra understands quantum physics. As pitched by William, there's no difference between a blockchain and a message passing system. (Which begs the question of why this matters)
Some people want to believe blockchains are a solution for everything because they are not technical. Like the guy in the video, when all you have is a hammer...
If you understand the tech, it's just another data structure + consensus algorithm. Not everything needs to be decentralised, or to operate in a trustless network.