I think this leaves us with 2 options.

Either A) We educate new users about the basics of Nostr, to get them aqcuatented with key managment and how things will work.

B) We abstract away as much as we can initially so users just think they are using a normal web app until they leter realize what makes Nostr different. 

I think that route B is easier for board adoption, but, it will be very important to build things in such a way so users can 
"Opt-out" of custodial key managment solutions once they have spent the time to get a better understanding of how nostr works. What nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft has been working on will help onboarding immensely imo.