One of the killer features for Keybase is the combination of teams + KeybaseFS. Unfortunately this doesn't look like it has either of those features.
I think Keybase does what it intends to do, which is to make PKI accessible to non-experts and to cultivate a community of users achieve the usefulness that network effect affords.
If you're really just looking for encryption and signing, encrypted filesystems, encrypted chat, distributed filesystems, and you're an expert, you have the tools you need.
I think the flaw here is that you're (likely) comparing purpose-built with unrelated unix-like apps.
What could have been done here with Keybase, is a purpose built app composed of unix-like tools, all controlled and implemented towards the purpose-built app. Aka the IM would be unique if you wanted it, or bundled with the FS, but both would be first-class Keybase citizens.
Unfortunately most companies don't put the time or effort into letting people consume parts of their offerings. It's all or nothing. Which is the complaint here, imo.
Makes it less likely that our secrets end up on Github where if Github were hacked, or an web account was hacked that our secrets become public.
https://github.com/plyint/encpass.sh/blob/master/extensions/...