I would agree with that to some degree, but I think typing faster can help the thought process, in the sense that you can write down your ideas faster, so that you can free them from your memory and keep moving forward with your thoughts.
Think -> decide that you need to extract a method -> using the keyboard, and your editor, do that -> think again.
The step w/ the keyboard will involve your custom editor environment, and typing. If you get it done, you can shorten the cycle from Think -> Decide -> Act -> Think, and get into a smoother workflow. If your keyboard and tools need your active thought on how to succeed, you get derailed in that Act step, and have to restart your thinking about the real problem.