I agree with that. Since the Zoom acquisition, developments on Keybase started to fall down, no quality and major updates. Zoom acquired Keybase not for the Keybase as product but only to get the talents of the E2EE and Security Engineers behind Keybase to work with Zoom.
I'll mark this 'keybase.pub being shutdown' as the second downfall of Keybase. Yes, others will say that "its only keybase.pub" but it's the start. Keybase will slowly disappear.
Are there any open source alternatives with quality UX and documentation?