Do clients have to specifically add support for this though, just like NIP-26? That seemed to be a pain point for that NIP, getting support for it. If that's needed for nsecbunker, hopefully since it's much more powerful, we'll see wider support across the ecosystem.
Discussion
No; that’s the beauty of it. No one has to support it (other than the application users want to use) no relay needs to change, no client needs to change.
I’ve been using it for over a month and no one had to do anything.
No one can even tell that I’m using it to write this very note! 😂