From the article, try J and K instead of j and k; that moves to next/previous hunk, not next/previous unreviewed hunk.
To you and the sibling commenter:
D’oh. I should have reviewed the docs better, you’re totally right. Now I feel dumb. Wish I would’ve learned this a long time ago. (Or maybe I did and forgot, perhaps multiple times. I’ve used git basically daily since 2006. I’ve forgotten a lot.)
I wish the j and k shortcuts could revisit hunks I’ve already added/rejected, not just ones I haven’t reviewed yet. On a large set of unstaged changes that you mostly don’t want, it really sucks to “lose your place” in the list of hunks.