Sean, I don't disagree with you BUT traditional social media protocols are easy to learn because there's no major setup needed. In the case of Nostr you need a major setup. This setup is the "onboarding barrier" which makes most users leave in less than 2 days, most traditional social media users have a very low IQ and very little time, to get them to learn the basics of Nostr you will need a very clear, concise and straightforward presentation. That's my opinion.
Discussion
Maybe Nostr isn't the everything app then and will only appeal to a certain demographic. It's full of developers and freedom fighters. This won't appeal to the majority. Most people don't want to run a node on Bitcoin, they just want to use it. Just like most people won't want to take control of their sm with a nip 05 (if that's the correct term - I'm not running my own relay) they just want to check in on their tribe.