I would not suggest saying "switch". Alibaba is using Web technology heavily so they need the code to be really fast and if the size is smaller then it's even better. Also they want to script Weex low-level APIs with it.
So they just built one on their own and encourage the community to use it.
Alibaba is too large company to choose only a single frameworks. They are cooperating with Vuejs author. But as far as I know some teams of them are just building they stack on top React, for example https://ant.design/ .
ok, I won't submit Chinese content.
This project is mixed of English and Chinese. I thought it would be ok. Turned out not.
We have quite some tools in the Chinese community. It's a pity we can not share between each other just because part of the docs is in Chinese.
yeah, React is cool and I used it for two years and I'm still using it. I just think it's always limited because of JavaScript and Facebook. While is ClojureScript we can try more.