JavaScript could benefit from a better standard language. But this isn't the biggest concern since the language is "friendly enough" to write most tasks in.
The other point this article points is that the JS committee is adding more features to the language. While most of them are great, if they keep adopting every feature form other languages that they think are "neat" the language will become like the chicken-pig-goaty thing the article describes.
I don't know if a standard library would actually fix the problem of package over-use. I keep seeing examples of projects importing _ or something similar when the feature they use already exists in the standard. You don't need _ for map anymore. You can lead a horse to water, etc.
The other point this article points is that the JS committee is adding more features to the language. While most of them are great, if they keep adopting every feature form other languages that they think are "neat" the language will become like the chicken-pig-goaty thing the article describes.
It will become C++Script.