This probably needs a bigger callout. A user who isn't familiar with ATProto doesn't even know to ask this question and the design space from its contemporaries (e.g., discord, slack, etc) suggests that chats are nominally private if folks aren't a member of the channel.
It's a very cool product but you have to let people know their messages aren't private.
It's a very cool product but you have to let people know their messages aren't private.