Took me a while but you deserve a zap ! Thanks mate. And yeah, I figured as much. I wasn't really expecting nostr to replace my messenger app, but to me its a no-brainer to e2e encrypt DM's between two people by default. So I wondered.
Discussion
Well, they are technically encrypted, but it's kinda like whatsapp in that ask the metadata is leaky even if the message content isn't directly visible.
It's still a work in progress. It'll be fixed eventually.