I don't think it's a naive example. All these kind of proposed blockchain solutions raise the same questions for me: Why do you need a decentralized blockchain

I don't think it's a naive example. All these kind of proposed blockchain solutions raise the same questions for me: Why do you need a decentralized blockchain with tokens to solve that problem? If not for the tokens, what incentive have people to keep running and protect the blockchain against attacks? The oracle problem: how do you prevent someone from pushing false or duplicate data to the blockchain?