I'm constantly hitting the wrong button because some animation shifted it, some dialog popped over shit, or some notification decided now was a good time to cover the thing I was trying to do. The animations make things feel sluggish. And they don't even look good.

The only advice that doesn't improve all UIs is the bit about filling in with white and adding black after.

In general, we only really notice the animations that go wrong, like the ones that are too slow or get in the way, but when executed by the book (like the numbers material design published, or perhaps even slightly faster), they are a valuable way of communicating intuition for how to use the UI to a user.

But yes, I can understand the desire to remove them, or at minimum drastically reduce their visual impact for e-ink