I am unfamiliar with the laws of Wyoming as they pertain to the specifics of these morons' 10k bounty. In Maryland, where I live, this would probably be considered solicitation for murder (i.e. murder for hire such as when your wife tries to hire a hitman to kill you over the new optic you just bought). The politics of MD would probably preclude prosecution of the loonies, however.
In Florida, an offer to pay for murder is NOT a joke and they actively prosecute. Have family there and the cops will troll Craigslist for everything from hitman hire attempts to busting hookers to grabbing people selling "great deals on new merchandise" (stolen goods). When you have lost faith in society, just go on YouTube and watch some of Grady Judds pressers.