Not that much; NDK supports NIP-46 very easily. I wrote a “5 minute guide to supporting NIP-46” a few months ago.

Certainly is a bit more complex but very very slight, I just need to write more docs about it, but I think unlocking a normie-friendly experience warrants it x1000000

Your talk was very inspiring, nostr:npub1wmr34t36fy03m8hvgl96zl3znndyzyaqhwmwdtshwmtkg03fetaqhjg240. Thank you.