This is very true.

With some rare exceptions (IE legally enforced data deletion upon user request) nothing is ever truly deleted.  Any enterprise data warehouse system, at scale, will use “soft deletion” techniques like updating an IS_DELETED flag to TRUE.

I don’t know the intricacies of the deletion NIP… but if the consensus is that the protocol mechanism is good enough, then clients would do well to implement it. nostr:note178tfxt6r98e4huv5d8vv7u8x0nkhclt0whcep3z8xutu9uuj4yuqf7syk6 

 it's there but almost no clients support it. iris.to does i think, but not seen it anywhere else