Thats my understanding as well and an important aspect.
So I gather its to protect the original user destroying the SD and then recreating it and claim that it is the original and has never been different, IE falsifying the original. With a version anyone can tell its been modified, Then its to also to protect against others spoofing something that was destroyed because the owner wanted it available no longer and the address was linked or computed
I am wondering if we could have a zero data SD that basically only contains address+tag+version and can be claimed by anyone, effectually the SD contents is destroyed, consumes little space on the network and this keeps version number.
If the owner wishes to keep ownership then they do not “delete” but simply zeros the data and mark the SD as empty. Maybe a flag in the SD can denote an empty SD. Or have the “deleted” SD also contain the owner field optionally