Sadly, I think JS is at its best with most of ES3, a little of ES5, and drop of ES6. There's still a tiny, good (Ok... adequate) language underneath all the cruft. But unfortunately there's a lot of extra unnecessary complexity in JS that makes it easy for us to write unneccesarily complex and unreliable code.

And unfortunately, I think that because that complexity is there, programmers may feel they have to understand and use that complexity. Instead they should be actively preventing it from entering their brains and their codebase.