That doesn't have anything to do with whether they take a case or not. Really there are three common ways to get a case in front of SCOTUS. 1. You're the federal gov(neither party in this case is), 2. It's a direct constitutional issue(this isn't a constitutional issue at least the way it's currently argued it doesn't appear to be) 3. There is differences in rulings on similar cases in different courts of appeals so say if a similar case was brought in the 8th or 9th after going through its process or something by different parties and they ruled the opposite way then SCOTUS would take it up cause you have conflicting opinion at the appeals level.I don't think the Supreme Court would take it since it was unanimously supported by the 10th Circuit.
Now they could do an enbanc appeal to entire 10th circuit. But this guy has lost at every step and the 10th has no obligation to hear it enbanc so that and SCOTUS isn't a guaranteed thing. Either way if he keeps pursuing it he's looking at probably 2 years before there is even a verdict in any of it and the verdict may be what he wants so for now it's the law in 6 states.