It would be interesting to see how much time you save.
I guess average typists will type "the" much faster than a complex word. Through muscle memory. I think it will be less noticeable for fast typists, who get their speed by being consistently fast.
I thought a bit about this... I feel like for me most of my slowdown comes from needing to get timing correct between my right and left hand. When I go too fast I start to get the letters in the wrong order, which isn't as much of a risk for letters all coming from the same hand (for me at least shrug)
I might go look for some research on typing times for different kinds of words beyond letter count!
I guess average typists will type "the" much faster than a complex word. Through muscle memory. I think it will be less noticeable for fast typists, who get their speed by being consistently fast.