I don't believe this. Someone who knows how to design and implement a language with real closures, prototype-based inheritance, a garbage collector, etc. also k

I don't believe this. Someone who knows how to design and implement a language with real closures, prototype-based inheritance, a garbage collector, etc. also knows the value and power of those things, used them before extensively and knows how far they can go. Also, the shortcomings that everybody loves to talk about are mostly misunderstood features (yes, even == which everybody loves to hate), and mostly by programmers who wouldn't even know where to start designing a language.