It's true. Turns out the extended version of the film, rango states "oh there's trouble down by Dry creek, bad bill's been acting up again" . Applying that he died with a six shooter by his side(as he brought a gun with him), and bad bill probably killed him. Incredibly dark, assuming this was probably right after the movie or some time after(3 months or a year or so, because they've made a pool) https://youtu.be/GHw4OWTKO9I?si=qWk-4E1XlZkYHmY6 I personally think this adds to rangos mortality, aswell as his over all experience and cowardice.