They also try to fix the web https://solidproject.org/
Nostr is not fixing the web, it's just relaying notes, and other stuff from one user, to another Solid is from the people that made the web, taking it to its final version, and back to its decentralized roots (yes fixing) Different things, one is doing one thing well, the other is making changes to the fabric of everything that exists. Both can work together, by design.