I guess that it will not surprise you when I say that the target is mainly non developers.
Btw, very good article!
I was nearly going to mention B.F. Skinner in my article, but I removed it to keep it short.
And as you know, my objective is to make people think. I often see that people focus too much on self-reflection (when talking about agile), write a lot of things to do that are mostly saying what they should do... but after several readings of Accelerate, I understand that the environment is crucial, but we often miss giving it is deserved importance.