Nuh on Nostr: No, WoT requires a public social graph so I know who are the friends of my friends, ...

No, WoT requires a public social graph so I know who are the friends of my friends, and even if you can do with with ZK proofs, I haven't seen any evidence of solid implementation that can handle spam well. We have decades of email fighting spam and it boils down to just servers doing their best at heuristic, if WoT was effective you would already have it.