Yeah. They seem to have taken the feedback ("Don't do this") from people in the beta (like me), piped it to /dev/null, then rolled it out anyway.
I guess someone had to show something for the time they'd spent on it or something. "What've you been working on for the last month?" -> "Adding an extra column to everyones dashboard, even though it takes up useful screen real estate, and many people don't want it". -> "Yeah, that's obviously a win, roll that out!"
Yeah, that was my first reaction as well! With the chapters being this short (which itself is great) it would be really nice to be able to use the arrow keys.
Not sure if the dev will see this, but it would be nice if it was a little easier to get to the table of contents as well. My suggested code change. (quick a dirty example)