With the exception of StackOverflow, I find this information promising actually...
The question scores are merely falling in line with the actual average quality of questions in Programmers. There have always been bad questions on Programmers, but up until recently, more active users finally understand the scope of the site and care enough to participate in meeting that vision.
Here is an example of a question that should have been heavily downvoted and closed with impunity. The answers are by far and away even WORSE:
http://programmers.stackexchange.com/questions/9409/what-was-the-worst-experience-youve-had-with-a-customer-userhttps://softwareengineering.stackexchange.com/questions/9409/what-was-the-worst-experience-youve-had-with-a-customer-user
No offense Pierre, but we were all fresh users at one point before we really understood what this place was about.