It's disingenuous for the authors to claim this is a near "drop-in" replacement for React. Just because it works now for (likely) some limited surface area test app doesn't mean it will work in all of React's weird nooks and cranes, or its constantly changing APIs or huge stack of dependent behaviors it has inherited from its ever-changing dependencies.

Clearly, the authors don't have much experience in this regard to make such claims. Caveat emptor.