The problem with people like Parker is that they’re incorrectly concerned about follower count, even though he didn’t say that directly. They’re worried about reach and engagement because that’s what is required in order to be relevant/monetized on platforms like X.

If the worst happened on nostr and you had to switch to a new key pair, the people who care most about keeping in touch with you would know about it out pretty quickly, and would vouch for you so others know how to find you and to disregard the old npub. Sort of like switching to a new email if you lost access to the old one.