DMs aren't as relevant in Lemmy so I get why securing them isn't a priority, but in Mastodon or any twitter clone it seems like a relevant feature I'd like to have some security/privacy with. Instance admins, and anybody who breaks into their server, being able to see all DMs seems like a security flaw that should be engineered away. Even Facebook, the place with the worst privacy, has E2E encryption (or so they claim, who really knows)