It has to do with the fact that Ford, for all his greatness, is an Irish egomaniac, as anyone who knows him will say.
“My Mom and Dad did it pretty good, so I know it can work. The foremost thing I would say about working with Robin and Sean is that they were devoted to this project and devoted to their characters. You can't ask for any more from talented actors like that.”
“We're at war against the ultimate evil in the world, and We're going to win.”