Ironically, StackOverflow devs themselves don't seem to care about software quality: https://news.ycombinator.com/item?id=10519600
That doesn't preclude other aspects of quality of course. But it does influence how they're approached. A heavily abstracted system that hurts performance is unacceptable, but there are other ways to achieve the same ends.
You might find this article interesting... http://samsaffron.com/archive/2011/03/30/How+I+learned+to+st...
This article from Sam Saffron is very interesting. He was very reasonable testing the ORMs available, and only after realizing that none reached the performance he needed, he decided to write his own. The problem is when people do that and "reinvent the wheel" without searching if someone already solved that problem for you.