No, because I think one of them is kind of wrong (you can be competent and still use jQuery) and three of them are better off replaced by "use jshint".

Also, you'd be surprised how many otherwise competent javascript programmers don't understand this and simply avoid it most of the time. Heck, I wrote some pretty ridiculously awesome (and robust) stuff without really understanding this, and it's quite possible someone telling everyone they need to understand this, doesn't.

I wonder which title attracts a larger audience. Maybe confident developers would assume “five things every competent Javascript developer must know” would contain nothing new to them, while “5 tips to become a better Javascript developer” promises to offer something new.