Those are third party extensions, not browser features, and they're not consistently applied.

Going from an image to a root domain is not a hierarchy and as a pathological data hoarder who has downloaded a lot of images from a lot of sites I don't understand why I'd ever want that feature. It's wild that that's their first example use case on the article.

Similarly, going from page N of results to page 1 isn't "up a level in heirarchy".