My impression the video isn't designed for people "inside baseball," and tries to establish context for "What even is this thing that you're working on?" I guess the author could add a skip if viewers don't want 5-minutes~ of Wii U background/context.

Here is a rough timestamped-link for skipping the context:

https://youtu.be/jlbcKuDEBw8?si=X1S3g2npigtWf5bk&t=303