Why does Uniswap need to replace all of our exchanges within a two year timespan in order to be seen as useful, novel, and interesting tech? When was the last time you applied this standard to the rest of our technology? HN can admit that Tor, Scuttlebutt, 3D printing, text-to-image GANs is interesting and useful tech, despite it not taking over average users daily lives.
The basic premises of crypto are to be decentralized and permissionless systems that support peer-to-peer forms of exchange and ownership, and they largely succeed in their defined goals. The goal of these protocols is to provide new tools, not to replace every corner of fiat and financial systems.