I do type Z with little finger, etc, because that's how the typing software I used long, long time ago taught it. But I don't accommodate by messing up my wrists, which are still in a natural position. My fingers just adapted to the needed flexibility. My left pinky hitting the Z is trivial and less effort, IMO, than my right index finger hitting Y. And yes, I use a conventional straight keyboard, not an ergonomic one.