one-time-use npubs are kinda silly, by definition they provide no assurance of authorship by anyone of credibility - it's about as useful as anon mode in reddit
the problem of anonymous credibility in a decentralised protocol is not easy, but it's possible, watch this space
I do this to bridge folks from Tiktok to Nostr, but the incentive to drive the adoption is fed by providing education services.
So users get a "single player" app that creates an npub for them and from there they get exposed to things and make their own choices.
https://m.primal.net/JuIC.png