- with clients like yours that only allow to follow people, with no 'trending' or #hashtag feeds, the monoculture or excessive promotions do not matter because the user only sees what he wants to see.

- yes, note copying does not scale. Some distributed systems model must be enforced, I am not even sure it exists. 

But another alternative to doom is to become practically divided into clusters of relays, separated by language or other issues. Not by enforcement of any mechanism, just because everybody who matters about this topic on this language will end up publising in the same relays.
 

 Wait, they're using a nostr client that doesn't follow hashtags? 

Lol... no wonder they're having a boring experience on nostr. 😂

And what's the point of having a client that can't follow hashtags?  Like, it's hashtags that make the experience. It's hashtags that expose you to more people and ideas about a topic than just the people you follow.  

 I never used ANY social network until the fraudemic forced me to follow people as the only possible source of info.

"trending topics" will often reflect whatever pervertion, distraction, or stupidity is trending on mainstream society or even worse, mainstream midia, and does not interest me at all.