But I do see that the same reason I am optimistic is the same reason many users are disappointed and they're right - Keybase seems to have pivoted and they are headed in a completely different direction than they were when we joined.
Keys.pub looks to fulfill precisely the promise of "what Keybase was supposed to be". And crucially, I think; looks to be fully open source (server-side included, no sketchy opaque metadata spider-web by a US corporate).
I do see these two projects as fully complementary.
It would be interesting if this could, optionally, import pubkeys from Keybase as well. I think these could be complementary.