This is true.

But at the same time there are dozens of npubs I used to love interacting with that are no longer posting. Running plebs vs zombies monthly is eye opening to how many interesting accounts there are who used to post non Bitcoin oriented stuff that have fallen off.

A lot who saw the promise of Nostr as a freedom protocol, not a Bitcoin chat room. But I think they just eventually get bored of the meta, have few interactions with their posts, so they leave because it's boring.