Shouldn't productivity be measured in how much time it takes to solve problems? The amount of code produced at the end is only relevant if typing is a significant portion of your time spent. Typing is rarely my bottleneck.
Agree that typing speed is not the bottleneck when writing code, but there is something to be said for writing fewer lines of code that are also easy to understand (ie. overly clever code that is concise is often a negative). That should make maintenance and debugging easier as there is less code in which to introduce bugs and less code to load into your brain when returning to it later.
