What does this E2EE API achieve with something that is public publishing? Is it for private messages? Private reporting to the mods? I saw something in the d

What does this E2EE API achieve with something that is public publishing? Is it for private messages? Private reporting to the mods? I saw something in the description about moderation. Looking at the linked issue, it's for PMs: https://github.com/tootsuite/mastodon/issues/1093 https://github.com/tootsuite/mastodon/issues/1093