Texas will not go the way of Austin. In fact, I predict Austin will eventually implode as well. And I love Austin but just wouldn't want to live there because of the wokeness even if it weren't so damn expensive. Dallas is liberal, but Fort Worth will be larger within 10 years.
What you should watch out for in Tennessee is that Nashville is on its way to becoming Austin Atlanta or Atlanta Austin, and that will have the same effect on the entire state that Austin and Dallas have had on Texas. Missouri has the advantage of both Kansas City having peaked in its cultural impact decades ago and St Louis having little potential for becoming more powerful. The Ozarks are probably more self-influential on southwestern Missouri, northern Arkansas and eastern Oklahoma than any of those states' urban centers can ever overcome.
Personally, my focus is on buying land in the Hill Country safely outside the reach of Austin sprawl because of the live-and-let-live attitude that prevails there in combination with my own personal geological and climate preferences, but aside from that, if I were a Torah Keeper I'd probably most likely be looking for land in southern Missouri rather than west central Texas.
My prediction, though, is that Texas will edge out Missouri as the first state to formally decriminalize plural marriage.