What I'm saying is that, past an average typing speed, obsessing over WPM gets you diminishing returns, because that's not where the bottleneck is. You should rather spend time improving other aspects of your process, but of course, "thinking better/smarter" is harder to improve.
For the record, I never measured WPM but I'm mostly a fast 2-fingers typist. All keys are typed with my index fingers, and the spacebar with the thumb and some of the special (shift, CTRL, etc) keys with some other finger.
I will lose every competition with a WPM-focused typist, but I can guarantee you my effective tasks -- the actual job we're meant to complete -- will not take me longer, unless said job is transcribing a document (which is never my job).