I think they could've done a better job by, just doing the storyline the same way they did in Wyatt Earp. Start from an early age and progress through his life with all the adventures he had that we've all read about in history books.
The lives of way too many of our historical Western figures have been sensationalized and distorted by what passed for the news media back then. And things really haven't changed all that much in modern times.
So-called "journalists" are, along with politicians and their progenitors the lawyers, my least favorite people in American society. Every time I watch a movie that contains scenes of a news mob hounding a subject, for whatever reason, I get sick to my stomach. I will believe until the day I die that the biased news media, with their constant negative reporting, were primarily responsible for this country "losing" the Vietnam War.