My problem with it is that it gives people too much freedom. They can write the code in very, VERY ugly ways… And they do. It’s a language that let’s you write a mess pretty easily.
That’s really my only complaint. The ugliness happens mainly in:
callback hell. For some reason some people still do callback hell in 2023.
functions as objects. This is pretty neat actually, one of the best things in Javascript, but some people just abuse the hell out of it.