Concept seems fun, and I'm expecting we'll see a bunch of those in the next few weeks/months. UX of that specific page seems broken, however, as the container for the explanation of each "function" doesn't scroll along with the rest of the content (stays stuck at the top) and makes it impossible to see.

I can confirm the broken UI. The demo container disappears as you scroll down, leaving a blank space that takes up most of the screen. I want to make a snarky joke about this but I'm just tired at this point.