I would counter, optimistically, that NOSTR allows anyone to have any number of identities. One being hacked does not mean that all are lost, more can be made, and old content remains accessible!
Discussion
Agree. What I am designing with #nostr #safebox, each component has its own nostr identity (nsec). As you say, your ‘identity’ does not distill down to a single nsec - you can have many.
Yes this is definitely a pro and not a con.
Specially if it's a anonymous acct.
I have seen some real identity ones, that granted they fair and square loose their keys because poor management , start over. It's not ideal, but it's better than nothing, or trusting another big platform.
I just think the problem of impersonation by bigger players with cyber skills taking over real identity accts is a real one that, if solved, will give even more of an edge to nostr. Still what you say remains an option, no body is limiting me to create some other back up accts in case main one get hacked.