The author works as a back end engineer @ Google. I appreciate his "outsider" approach as it is quite a bit simpler than other UI libraries & even reactive state management libraries such as Nanostores. I'm sure if he were in a different development role, his technique would be refined to account for full stack development use cases.

I don't mean to throw any shade on Tao. He is very talented & his approach is beneficially novel. I just don't think he as much experience what life is like as a full stack (or front end) developer as many here.

I forked his work to create relementjs & rmemo. Tao didn't want to support server side reactivity & I heavily use it. Also, Andrey (maintainer of Nanostores) didn't want to add my PR for autosubscriptions due to the complexity cost that would be added to Nanostores...So I wrote my own set of libraries. I hope library simplicity trends more because it is very nice to work with simple libraries.

Tao's approach is sound. He just relies on the DOM to manage the reactive state, so SSR reactivity would require a different approach. I ended up using WeakRef, which is significantly smaller than the approach used by traditional reactive state management libraries.