Relays delete content? I thought that was one of the things Nostr was supposed to be was undeleteable. I'm not a techy person so maybe I just don't know.
Discussion
There’s a difference here.
You can’t “delete” anything on nostr because that would require the ability to force all relays with a copy of something to delete it in unison.
Any given relay is free to delete what it wants though. There are costs to data storage and relays should be expected to manage their costs as they see fit.
It’s not that the relays delete the content it’s just the content disappears sometimes over time.