What Is Developer Culture?

A developer culture prioritizes the people that make it all happen.
"I can tell how much this story means to you. It makes me wish I could've experienced that with a Development Team."

This is what another Scrum Master told me after we took turns during a recent training to share a success story about a Development Team. I've heard this many times before.

What does this say about Development Teams out there? Why is there such a strong emphasis on the people needed for the process and so little on the people doing the work?