For an example of what I mean by composability, see the "Liskov Substitution" section of this article https://medium.com/codex/can-we-all-just-admit-react-hooks-were-a-bad-idea-c48120c5188d.

And you also bring up a good point that most of the Array methods return a new Array, so when you're working in an environment where immutability is important, it often saves hassle to use them.