Moving both your hands to the keyboard to search for a node, or anything, is considered more obtrusive then leaving your hand on the mouse, and using context. Whole reason most every system ever is a GUI. This is not faster, but considered much slower, as every key-stroke is technically a step (enter Macros to condense those steps down).
command line interface style keyboard searching is more advanced area (you know what you want explicitly -- doesn't facilitate categories to give an idea of what it is when browsing).
It would be cool if the context a menus were all sorted from the root menu though (but easy to see why it is the way it is when it comes to functions and special case lists), instead of so many sub-menus. Maybe right-click -> main-line functions, and middle-click / alt + right-click -> all special case functions
