Since it's accessibility based, it's more laudable than teaching CS students how to center a div, but it's not like it really requires a mentor of some sort to express the nuances of, right? Or even if it does, it's still design.
A good CS degree definitely has the space to teach some basics in that area. To mention Gestaltgesetze, to explain human perception a bit, and give an introduction into usability. You do not get a useful developer in the end otherwise
Not all developers do stuff with UI, and of those that do not all do anything with a UI that is actually graphical beyond a terminal.
> since you need to understand basics of human perception to understand compression in that area (jpg, mp3), they talked about stuff like that.
That is a good reason to teach it, and counters my overly assertive original comment.