A couple of points here. Firstly, those are women. The fold-stuff-neatly gene is attached to the X chromosome. Men have the kill-something-and-drag-it-home-for-dinner gene, which is on the Y. Secondly, computer enhanced graphics. If Hollywood can make spaceships go pew pew pew, then folding a sheet is child’s play.
Third, this is winning the battle and losing the war. Mrs DoodleBob would clock me if I folded the fitted sheet this way. It may look neat, but no one would be able to differentiate from the unfitted sheets. Western Civ would collapse faster.