Quaternion rotation matrix unexpectedly has the opposite sense?

This isn't a quaternion problem so much as it is a usage and/or documentation issue with the DirectX call you're using. The transformation the call gives is the one that happens when you move the camera. If you're keeping the camera fixed and moving the world, you're swapping what's moving and what's fixed.

These coordinate transformations are inverses of each other, which is why taking the inverse works for you.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.