So much wrong with this, I dont know where to begin. Almost every line is problematic.

But in a nutshell, and most nostr devs dont know this.

Nostr is based on web servers called relays, that transmit notes, and other stuff, from one user to another. Its not a storage system, but some devs try to use it that way (big mistake!). It is good at sending notes in realtime, which is an expensive operation. Nostr uses taproot as an identity system, which aligns with bitcoin, but we've not really used that (yet!).

"web5" is an affinity play of web 2.0 and "web3" (affinity scam) = web5. It's uses so-called DIDs which aren't actually as decentralized as advertized. It is also based on web servers which can store information. It also has some cryptographic proofs, that nostr does not (yet) have. It's much better at storage than nostr.

Both techs are part of the web stack that do different things. Nostr has found a niche where it can make twitter clones and small micro apps, with some small bitcoin integration. It doesnt scale so needs to be subsidized to survive, rather than, being self-sustaining. Web5 didnt really take off, and was shuttered by block, but scales a bit better, and is better suited for storage.

Both are jigsaw pieces in a bigger puzzle.