Larry McMurtry's "The Last Kind Words Saloon"

I read this and enjoyed it, mostly because I wanted to finally read McMurtry, but Lonesome Dove was not in stock.

I finished it and looked at what people thought, and the critical reception is that the novel is slight, if well-written enough. My first instinct is to agree - the book is primarily a demyatification of the legend of Wyatt Earp and the shootout at the OK Corral by showing it as one of a series of pointless and violent events that happened to Earp and Doc Holliday, nothing special or meaningful to their lives or to Tombstone that would justify the legend of the event as we think of it in popular history.

My question to you is if that's far too simple a read or if there are other things to consider about the book as a whole.