You seem to assume that they type slower than all touch-typists, but I've met some touch-typists (with years of experience) that type slower than some non-touch

You seem to assume that they type slower than all touch-typists, but I've met some touch-typists (with years of experience) that type slower than some non-touch-typists. So again, it does not matter. Technique does not matter. Only results matter.