I think everybody on the React team is on board with functional principles (like separating side effects from computation and relying on referential transparenc

I think everybody on the React team is on board with functional principles (like separating side effects from computation and relying on referential transparency). But there’s a reason “deep” functional programming hasn’t gone mainstream — many people (including me) find it hard to contort their product code to express their thoughts in 100% functional way. React has always been about taking the pragmatic parts of FP and making them easy to benefit from without buying into learning category theory or something like that.