That's just a platitude, and it's wrong.
Languages with better features allow engineers at varying levels of experience to write better code than they otherwise might.
JS almost forces you to write garbage.
There are ways to work around this...
First, ES6 brings a lot of enhancements to JS. However, it also makes JS even more complex and unwieldy because now you have all of these new and old language features co-existing.
If you use a tool like ESLint, you can limit yourself to a subset of the whole ES6 standard that I think is a decent programming language.
There's also other ways to go at it, by using a language that compiles to JS like TypeScript, however maybe that would be considered cheating in the context of this argument.