Something that is usually not touched upon in these discussion:
The concept of self-reliance.
And with good reason - a GPS is a tool, not a life-style choice. Just like a watch, a sextant, shoes, etc. Even trekking poles.
To use your line of reasoning using anything more than the stars, sun and moon to navigate suggests lack of self-reliance.
To be critical of others who use a GPS is as silly as being critical of a carpenter using a nail gun instead of a stone axe. Use the best tool at hand, and use it to help accomplish the goal.
