I think we're also seeing an bit of an exodus from urban centers because of a changing America & economy. We had the mass movement of people to urban areas during the industrial revolution, as that's where the work was, and supposedly better wages. Then we had the great migration north of folks who moved to the rust belt for heavy manufacturing (auto, etc). Now that those industries have moved overseas, there's no economic incentive to stay in regions that are lacking in quality jobs. That, coupled with the digital revolution which allows for work anywhere, I think you see people make choices to enjoy areas that are not quite as populated as major metropolitan centers, and given the cost of living in those centers (which happens when places are popular and people want to live there, ala MT real estate prices).
Helena has over 25K people, sir. And they all drive really slow. Then you have all the valley trash & bedroom communities that makes the Helena area something like 100K.
We moved to where we did because I'm devolving. We've covered this. But also, I'm 20 minutes from downtown Traverse City. It's not like I'm living in Ingomar. We're rural, sure, but it's bedroom community rural. I wouldn't say I've given up anything in terms of having town amenities, except for about 10 more minutes of drive time. Rural in the east is vastly different than rural in the west.
But this isn't evolution on a grand scale. And simply using the economic freedom provided by the digital revolution in one nation as evidence that humans haven't evolved as a species to seek security in numbers is silly.