This is good, I have found multiple instances of some users relay list not found in purplepag.es, I have came up with purpagepag.es, user.kindpag.es, relay.nos.social and relay.nostr.band as "bootstrap" user relays, and believe me, it's somewhat not enough, the other day I was trying to find a relay list of a particular user across 30+ popular relays until I eventually gave up, but primal somehow managed to find it like magic in their UI.