Where did you get the idea you just need 1 relay? Do you also just use 1 website on the internet?
The whole relay thing just requires people to build intuition around it, and the first people are need to do so are developers. For the most part, client developers either fucked up the relay part (Damus in the beginning, and Primal to this day), or they shoved it into the background.
Its only more recently that developers more broadly are figuring it out and are experimenting and exploring the possibilities. Not just in functionality but also in how they present it to the user.
I don't think this intuition out of reach for the normie, i don't see why it would be; its very analoge actually and maps well to the physical world in many instances. The same goes for keypairs actually.
In any event, Nostr does in fact introduce a new paradigm, and we are just figuring out what the implications are as we go along. As such i am patient and not too worried at this stage. As long as i see progress i remain hopefull we 'get there'.
What client do you use, and have you tried nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q ?