Right around when I started using it (mid 2019) there was a bunch of V3 releases that each on it's own might've not seemed like much but they all improved small parts of the engine that made it easy to get typing on most of your code if using a functional style without adding maybe more than a few type declarations and some functions typings.
The Crockford crowd would like us to live in a world of ES5 as if that's some kind of badge of pride, while justifying it with a warcry of "functional", while breaking the preconceptions of functional programming all throughout.
Personally I prefer neither prototypal or classes, 90% of the time you just want the interfaces, unions or inferred types and the few places where you actually want inheritance and/or object methods you really are just better off with a factory method that then creates a literal that is used or suits an interface.
I've seen developers make complete messes of codebases that when using modern JS features would be mostly trivial, and they hide behind The Good Parts to justify it. And this includes suggesting that classes are somehow bad, and avoiding them in favor of POJOs and messily bound functions is preferrable despite JS not receiving a dedicated class concept until years after The Good Parts was published...
Javascript seems much, much, much closer to Lisp than to Smalltalk. Granted, all three are very dynamic, but message passing needs to be bolted onto javascript. Meanwhile pretty much all of lisp is included "for free" (...via some of the ugliest syntax you've ever used).