but they are not that big of a deal to an experienced JavaScript programmer.

A well-designed language wouldn’t require “experience” for stupid gotchas like these to not be that big of a deal in the first place.

After all, I’m sure a sufficiently “experienced programmer” could adapt to anything up to and including fucking Malbolge if necessary, but that doesn’t mean it’s equal to a language that’s actually good.

Differences in quality between languages are real, and Javascript is closer to the bad end of that spectrum.