C'mon Off, this is a cheap fake.
Kamala explained it: stairs go up and down, the President went up the stairs and he later came back down the stairs, he went up the stairs to accend to higher spot and came back down the stairs to decend to a lower spot. While going up the stairs he did not fall and while going down the stairs he did not fall. Stairs help one go up and down without falling. Consider stairs like the President's inflation policy, he made inflation go up so he could bring inflation down. It is understandable that that some might misunderstood why he went up and down the stairs but still it has been and we should be unburdened by what has been.
The President had a shorter explanation: Corn Pop was flying the jet with Mouse as his co-pilot.