Since you can't choose other people's clients, or what relays your note will hit, the concept of editing/deleting is really a facade.
Discussion
Again, it's only about deletion *requests*, i.e. showing intent. Why are you painting it as if anyone claims proper deletions are possible? My very post that you replied to explicitly says "requests", and I haven't seen anyone saying anything else about the feature.
It already works like this on other decentralized protocols, with no demonstrable bad side effects that would outweigh the usefulness. If you want to insist that it's such a big problem, then please point us to good examples of that on other decentralized protocols, or concede that it's pure speculation. Also, you should not use any clients implementing NIP-09 (or not letting you turn it off), since that's your personal choice anyway.
I see now. If you don't mind that it's not deleted/edited for others, and only care about the display of desire, then I don't see anything out of place.