Payments are public on nostr so address reuse doesn’t seem to be too much of a problem. Could silent payments play a role in the future?

So, lightning payments are public normally. That means we can see who zapped who. We can't, however, see what the receiver of that zap then did with it later. With this, we'd be able to. Not trying to shit on it or anything, just understand the limitations. Seems like it'd be best to at LEAST submarine swap, lightning swap, or coinjoin before spending.