I am not sure what Douglas would say, but my impression is he favors composition over inheritance.
_.extend is a lot like inheritance, whereas 'instancing'/invoking another constructor and grabbing references to what you need is more like composition.
(http://en.wikipedia.org/wiki/Composition_over_inheritance)
Well for one you won't need to specify the modules you need with more than the require('somemodule') statements in your code.
And it can grab modules/components/files directly from github which can be a plus if you have some private modules you use.
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.
Don't get me wrong - I am not agreeing with him politically.
But this is silly.
If they thought his political views would interfere with his work as CEO, they would not have chosen him in the first place. So why suddenly turn around - because the media got to them?
I really don't like when populism wins over rational thought.