Your "benchmark" is missing the time it takes everyone else to read your post, and for those who care to respond to do so. Those are sometimes significant externalities, even if they are mostly invisible to you.
Increased content is only sometimes good. We increase the utility of this site when we limit how many duplicate discussions we have (hence super search), when people are encouraged to use other resources (like CPAN) pre-emptively, and when people are encouraged to work efficiently. This encourages a minimalistic approach. We also increase the utility of the site when the discussions are sufficiently interesting that more good contributers are drawn into the mix. That suggests a more verbose approach.
How to balance those out is a matter of sometimes difficult judgement calls. Even after the fact it can be a matter of debate as to whether someone succeeded. (FWIW, I thought your initial post was just fine and just wanted to comment on the idea of whether content per se was a good or bad thing...)
