Sometimes a movie is just a movie, too. I don’t look for hidden meanings everywhere.
https://www.datalounge.com/thread/15785047-3-10-to-yuma-1957-or-3-10-to-yuma-2007-
http://themovieprojector.blogspot.com/2008/08/classic-western-tale-part-2-310-to-yuma.html
http://www.imdb.com/title/tt0381849/reviews-202
http://www.thefilmyap.com/movies/310-to-yuma/
You don’t have to dig deep to find that the director purpose was to make the movie just as I labeled it.