I was just replying to the claim that its not lightweight, i don’t know what the feed discussion is about. We just try to make sure the local relay has an api that is compatible with relays with extra functionality on top so you can do more advanced feeds locally and privately.

Any filter divergence just means we have to sync more data than we might need to sometimes yes. Extreme example is negentropy sync all data from your feeds in last 24h to not leak any query information to relays (privacy mode)