@cjd @kaniini @abby Could you elaborate on why? I have my own suspicion of your answer: for content-addressed content, I think they're probably often fine, but if it's a "varying bucket" full of content, it's easier to intentionally drop content from it.
BTW, for the mutable datashards component (which I think Pleroma probably wants for moveable actor profiles) my suspicion is that a gossip network may be more useful than a DHT for informing about updates. Not sure about immutable chunks tho