you don't have to
You don't have to convince people to buy a phone or a toilet or a light bulb. when the tech is good enough people auto buy/come/use/adopt
Discussion
Different brands make people know about themselves.
have you seen leonardo di caprio do interviews or post on social media? no he just makes great movies.
Tesla does not do adverising, they just make cars. A lot of people like the cars, and they talk about them, make videos, post, show friends.
when nostr or bitcoin is good enough, people will come. the end.