But this means, you could in theory crawl relays, for finding traces for other relays, to discover content for your nos-fluencers.

So in theory, your nos-fluencer can disappear from big relays, but if you can discover new relays through your known relays, you could find content on a nos-web corner that you did not know existed, and does not have to care, because you only "load" or use notes whose npub you trust.