I’m surprised the author didn’t dig into the fact that not all pixels are square. Or that pixels are made of underlying RGB light emitters. And that those RGB emitters are often very non-square. And often not 1:1 RGBEmitter-to-Pixel (stupid pentile).
Or the fact that a 1 megapixel camera (counting each color-filtered sensing element as a pixel) generates less information than a 1 megapixel monitor (counting each RGB triad as a pixel) can display.
