This is why nostr relays have to be simple and commodifiable and plentiful and any one of them needs to be painlessly and instantly replaceable by another. As soon as there is one relay that holds more weight than others (is more popular, has to be used by everyone in order to be able to follow each other, etc.) then nostr eventually devolves to mastodon.
Simple, commodifiable, interchangeable relays. That's the ticket.