We know about 12 principles of animation, do you think they still remaining after dynamics computer generated animation there?

12 principles are created long time ago the time where animations are created manually, so animators and animations will be consistence and uniform and to acts as a guideline. But even before the12 are more likely created in accordance to anatomical animations not for dynamics. In this case I believe they will remain  in the animation industry excluding dynamics. Dynamics has its own sets of rules to follow.

If we're talking about cloth, hair, fluids and such dynamics, then they react to the animation already created by the animator. Therefore the12 principles of animation should remain and are necessary to get nice behavior.

On the other hand, if we're talking about rigid body dynamics (like boxes falling for example) where there is no character involved, then we might not need the principles of animation. Of course sometimes classic animation can be easier to do than using CG dynamics in cases when we want more control, even of a falling box.