I back the OPs arguments all the way ! GPS is my primary means of aviation navigation. I argued strongly for its teaching to be included into the student syllabus.
I am tho' a traditionalist. At the age of sixteen I became a British Merchant Navy cadet and was taught the arts of coastal and celestial navigation. There is a special pleasure obtained from using ruler, chart, dividers and protractor, though their use is next to impossible when flying.
My recreation is now gained from sailing small boats. Navigation information is readily gained from a combination of GPS and Navtex. Do I use it? Seldom. I prefer traditional means and in a sailing vessel have the time to do so. Time and speed are the major differences between boat and aircraft. In an aircraft you need an instant confirmation of where you are. Not so instant in a boat.