Apostate prophet observes the sky; Quran says Sun and Moon follow each other?

In answer to the video "43 Scientific Mistakes in the Quran"

In 91:2 the moon is said to follow the sun, because obviously when the night comes, the moon is the main celestial body observable in the sky while during the day it was the sun. The moon follows the sun sequentially, not in the sense of tailing it in a line. A 7th century person, just as the one living today would know that the moon's path in the sky almost never is the same as the sun's, especially in certain times of the year such as in winter and summer. So the verse here cannot be said to be reflecting the wrong scientific notions of a 7th century observer. And even if one insists on saying the moon follows the sun, technically, the Sun orbits the galaxy and all cosmic bodies (including the moon) revolving around it "follow" it in its orbit accross the galaxy.