I'm still firmly against the idea of not being able to delete, at the very least. On a platform where you're supposedly the sole owner of your data, you should have the right to delete that data. Editing can be argued against (still in favor) but I don't believe there's an argument that can strongly support no-delete.
Discussion
you can request to delete, o right to vanish 🤞
You don't own your data, you signify it was you sending it when you use your nsec. If you own your own rely you could not share your data then it would be only yours, but no one would see it. Once you send data to another rely, they now have it its not yours
It's not really an argument, it's the nature of the protocol. Anyone can build software that can harvest notes and ignore delete requests. It's possible to request deletion, but as it stands there is no way to guarantee it.