Indiana Jones is NOT irrelevant to this story, and the argument is missing the point
The TV Show; "The Big Bang Theory" makes a point that Indiana Jones is fundamentally irrelevant to the story. This is because they misunderstand what the story is about
The story is a race. Indy is contracted by the US Government to get the Ark before the Nazi. And he did. The end.
Sure, the Nazi would find it eventually and all that without him there... but that is the characteristics of a race, for crying out laud. And if it was not a race, he was still contracted to get it before the Nazi... and he did exactly that, and possibly saved the world in the process. That TV show is dead wrong.
I would rather say that without him, the Nazi would first have found it a bit later, then secondly have found out about its deadly force by its destruction on the island (or a similar nazi research facility) and thirdly later somehow utilized this force in the the war and kill all the good in the world... how is that for "playing no role in the outcome"????