So, based on this version, hotspots are discussed at 2:37:14 - 2:48:03
There's a fascinating comment from the engineer who worked for the company that made the cameras for the moon missions, starting at 2:40:32.
Of course, this segment also "sheds some light" (pun intended) on the hotspot problem above the clouds. Based on the same principle, that since the sun is 93 million miles away, the clouds should be evenly lit and there should be no hotspot.