Exactly. Because of this, I tend to think that there are no useless skills, or skills not worth refining as far as possible. Sure, there is contention for which skill you refine now, but asking yourself "should I get better at X?" in isolation should almost always get answered "yes". The more things you're really good at (typing, mental math, sharpening a knife, fixing your computer, navigating and merging git commits, cooking food, cleaning house, etc), the less time you'll spend on each thing, giving you more time to do other things.

Plus, writing code is not the only kind of typing that I expect a developer to do. Even if I could accept that typing speed is not important for writing code, it's certainly important for writing documentation, good commit messages, communication with team mates and stakeholders, etc.