They key words are so clearly. It is definitely visible but without that many details. Also, these photos show way to many details near the horizont, even without the light pollution the thicknes of the atmosphere would have effect.

Sorry, you are wrong. In a truly dark site with well adapted eyes the Milky Way looks very much like this. I just got back from an observatory in the Oregon high desert, and the views were staggering. The dust lanes and many other details were clearly visible.

Actually I did see the Milky Way and some nebula but I don't remember which one. This was a long time ago.

The reason I could see them is that my eyes do adapt to the night really well. I can still see around me when it is really dark while most people start remarking that it is getting dark. A side effect is that when I'm well adapted to dark places and a car passes by I get blinded by the head lights.