if you want to compare Indiana Jones to real life, the movies say flat out that he is an unscrupulous grave robber and he is completely aware of the hypocrisy. its part of his character arc, where he’s all about fortune and glory and doesnt believe in any of the mystical crap, until he is confronted with powers he didn’t understand and fights to stop others from exploiting them. and at the end of the day it was a movie