i think that’s pretty incorrect tbh; xmpp/otr, and matrix handle federation and private chat/encryption just fine
id much prefer to see chat that’s just thinly wrapped in a pgp implementation that gets its keys from keybase (maybe just initial secrets transferred with pgp for handshake or something)
> but decentralization isn't super effective for private channels of communication
The two examples of that not being the case are OTR XMPP and PGP e-mail.
> particularly where neither end is running the software in question
You cannot have useful encrypted communication if your software does not support it.
But presumably if proving a Keybase user and a Mastodon user are the same is given, when a Mastodon user wants to contact another outside of Mastodon, Keybase Chat may be the new default choice.