Ah, Ethereum.

Web 1.0's idealism was focused on liberal, unilateral sharing of information. People just put things up without any real commercialisation, until the dotcom era of the very late 90s. Not all the internet was the web: there was a decentralised censorship-resistant messageboard system known as USENET, and people tended to access email with local clients.

Web 2.0 was the commercialisation and polishing of the above; everything became a web app. The downside of this was everything being infested by advertising.

Web 3.0 likes to claim it's a return to 1.0 ideals of information-sharing, but if it's built on cryptocurrency it will inherit its flaws: appalling waste of energy, fundamental capacity limitations, and a tendency to collapse in fraud.