Echo JS 0.11.0

Well I think I can explain point 3 regarding rerendering the whole view.

No matter how efficient React is, the bigger your React view is, the more virtual DOM will have to be rerendered. In essence, if you have a god-like monolistic view containing everything in your app, it might not be performant to just let react rerender the whole virtual DOM when the data changes.

Honestly though, I believe React is pretty good at knowing what to rerender, and incredibly fast at it - so it's not really much of an issue for most people.