You might already know and used "for some reason" as sarcasm. For those that do not: Zoom did the usual aqui-hire. They needed to show their enterprise customers they were taking e2e encryption seriously, so they bought out the guys who did exactly that kind of encryption with Keybase.

A shame really, because Keybase was kind of unique in the way the facilitated social proof of identity tied to cryptographic keys. A shame though that they never found a really sustainable business model. When they turned to crypto currency towards the end of their independent run I knew it probably wouldn't last.