Chesty Morgan
They're not or they'd have called it "Ditching in a River" not "Sully".
I take your point, they appear to be looking at the whole career that culminates in a moment of superb leadership and skill.
It's just that that happens every day in every walk of life. The movie studio reckon that the free publicity of the (now) nationally known name will bring in more cash.
As I heard in an interview many years ago, about the studios: "The boss men don't care if they're making movies or baked beans - as long as they make money." Which is, amusingly, how airlines now also function ...