100% agree, that's why I'm saying offering this as nip96 option (even if paid, restricted etc) could serve those use cases, and I'm guilty as anyone in digging hyped stuff without looking through existing NIPs first. And you sure didn't waste time implementing nip96, it seems to be quite good, even if a bit too verbose for my taste.
There is a PR now to simplify it. Please submit a PR that will request immutability of the media. Also allow for the host to reject the upload based on presence of private metadata and viruses/exploits. Once you have it in, I will make sure to comment and implement once it’s merged 🐶🐾🫡