Actually, that's not what Crockford is saying. From the same link: "Figure out where the semicolons go. Put 'em in the right place. You'll be very much better off." That is a quote from 13:02 into the video. There is a trancript on the video, so you can read it too.

I won't claim Doug has never said something like that, but I doubt it. I watched many of his videos that can be found and he is always evangelizing learning the language, instead of blindly cargo culting.