True that. Finder is only slightly better than nautilus, but it gets beaten up by Dolphin badly. It would win outright for me with the "Press F4 for an integrated shell" feature alone.
They are referring to the shell being integrated into Finder similar to the integrated terminal in Visual Studio Code or IntelliJ IDEs not launching a separate Terminal.app window.
Here’s a guide I found: https://www.howtogeek.com/210147/how-to-open-terminal-in-the...