I agree... personally I think you should not be allowed to code unless you can type somewhere around 60-70 wpm. It is only with extreme mental effort that I can watch someone hunt-and-peck out 5 lines of code fiddling with their mouse and looking for the "n" key or the ";".
There should be a minimal period of time between when the code appears in your head and you see it expressed on a screen. If you can't type that fast, write it down, if you can't write it down, use a voice recorder.
I'm serious, if you only type 20 wpm, you are like an soccer player who can't run. Sure, running isn't the objective of soccer, but it sure as hell is an important skill to be proficient.