Reading through the linked article on "real world uses for Web3", most of them seem to consist of things that public key cryptography has been able to solve for decades (persistent identity, multiple persistent identities) or things you could do anyway ("right now, people can only go to facebook or Google. With Web3, everyone can have their own space!!") because the writer has apparently never heard of a web server.
Another HNer made a good point recently: Compute power is nearing post scarcity. Web3 is people trying to make it scarce again.