If they're anything like me, not many.
Nostr made almost no sense to me until I reached full/lightning node operator status. The legwork of linking a random lightning wallet to a random social media client was asking too much (not to even mention key management). That or it KYC'd me too hard and fast as an all-in-one for me to find it appetizing.
Nostr became self evident as I became self sovereign and the tools that facilitate smooth usage opened up to me.