Being a walled garden is more praise than hate (even if it wasn't intended that way)

As other commenters in this thread have said, SN is often more enjoyable than nostr. Nostr doesn't quite have the engagement because no one likes people who only talk about themselves (which because the clients typically follow the twitter/Facebook like style, that's what you get) those platforms that encourage those types of post only flourish via algorithms that filter out the boring "here's my food" posts with the fakest ass "here's how rich/attractive I am) posts or here's something you hate posts. They're what I would summarize as, human addiction to suffering engagement posts.

Counter to all of that, SN went with more community style posts where people are genuinely interested in each other (Read the book "How to Win Friends and Influence People" to understand why that's important) and we have a community that will not tolerate anyone making it a miserable place to share with each other.