Is mobx worth learning in 2019?

Question

React

Looking at the developer's React map for 2018, MobX is marked as optional.
Is there a need for it at the moment and what does it use for asynchronous requests?

Answer 1

Yes.
mobx is better than redux in most cases, redux caught up with the hype just in time.
The map is not a law, it is the opinion of the person who drew it.
There is no "necessity" in anything - there is an opportunity and options, among which you can choose what suits you best.
mobx has nothing to do with asynchronous requests, just like redux.
But due to its reactivity, you can use anything with it - from a simple fetch to something fancy.
Anything that can change the value of an object field integrates perfectly with mobx