When measuring Nostr’s global market share, however, we need to be aware that “hybrid” Nostr apps will not have the same freedom power as “Nostr only” apps. If it uses Nostr as identity layer, and stores user data in a local DB, is it really freedom tech? Hybrid apps are inevitable. Question is, how do we measure success and promote freedom tech?

I think we're agreeing. This is much more in line with an extended nostr eco system. Remove the relay part, and allow logging in with nsec identity is essentially the bridge to the wider web, for which the TAM is 1000x bigger. Relays end up being a small part of that.