For a lot of the sections (esp. the Tone of motion section) - I have to ask: why?
It's adding consistency to the presentation and harmonizing with any accompanying non-motion graphic styles, as you might see in a cultural presentation environment with both packaging/signage and video or interactive elements for example.
And, later, those guidelines give a designer an institutionally-bought-in way to talk to someone without talking down to them. Refer to the guideline and discuss the guideline, not "I'm right, you're wrong." It's not meant as purely a technical spec as it may be interpreted by more tech-oriented mindsets IOW.