"I can't write to write this in html and share it on the internet." Was totally reasonable and common to say in the 90's & early 2000's.

Then the protocol level was abstracted away for the user into frontends the average user identified with: MySpace, Twitter, Reddit, etc.

The protocol level of nostr can totally be abstracted away into both existing services as well as new ones. As a matter of fact there are already multiple services where I'd argue it already happened.