OOP is for helping to "engineer" software with hierarchies. What I referred to is framework/library level abstraction. Referring to Hipsters. Hard to scale, bad software, because one doesn't know the underlying technologies they're using. I mean, I am not saying use C, but try to do it natively. Most people use underscore because of some functions that are easily doable in vanilla.
Let me think if I get it, for example, you say "use vanilla javascript instead of CoffeeScript", because if you don't know how to javascript works, you shouldn't use any abstraction over something that you don't know how works, right?