I am deeply confused by this passage. KDE takes a much less staunch top-down development approach than Gnome, which means that every KDE application, and sometimes even with the KDE GUI, things are done their own way. It makes for a very disjointed experience when UI/UX patterns don't transfer between applications.
Its why I always end up switching back to Gnome, despite deeply disliking the flipside of the Gnome team's attitude. For example, it is beyond me why they haven't integrated Dock-to-Dash, Tiling Assistant and Night Theme Switcher. Especially Dash-to-Dock is so vastly popular that I reckon there's more people running Gnome with rather than without.