It was not my intention to imply that javascript is not weakly typed. And I think we have collectively determined (correctly) that weak typing is a burden in a general-purpose language. So yes, your conclusion is correct, weak typing is "a reason" that javascript is poorly designed.

But your claim wasn't "weak typing was a bad design decision", it was "JavaScript's weak typing is unequivocally one of the worst things about the language". I think it's silly to call a mis-feature "unequivocally one of the worst things" when people who write javascript basically never run into, and when it can be completely avoided by using unintrusive tooling like a linter.