I am happy to announce that Dolphin has a new view mode: Columns. Each column shows one folder. Select a folder and its content opens in the next column, so the path from the folder you opened down to your selection stays on screen. This layout is known as Miller columns, after Mark S. Miller, who created it in 1980.
Agree. I think this Columns mode is for MacOS users, where the file manager works similar when I remember correctly (oh boy its 20 years ago on an iMac).