I think the Python ethos applies directly to typing speed: "code is more often read than written".

I agree, if speed of your typing is your bottleneck in getting code written, perhaps you should be coding smarter not harder.

I think there is some wisdom that you should try to be a "good" typist, in that better typing skills reduce the risk of injury (RSI), but that's self-care/ergonomics, and while still very important, there are plenty of good software developers that hunt-and-pecked their way to an early retirement (and/or multiple carpal tunnel surgeries).