The impressive part here isn't the movement itself. You can easily train a model to perform a "procedural animation" that includes a full body control policy. The hard part is making it reliable enough to perform long sequences of movements and adapting to differences in robot placement. In other words, performing a flawless stage play is the hardest part.
I'm afraid you might not understand what you're talking about. Animation is a geometry problem, while robotics is a dynamics problem. The latter is subject to constraints many times greater than the former. There is no such "easy" model as you imagined that can transform the former into the latter.