I'll honestly agree with that. Oklahoma's northern borders literally exist because of the north south break from the civil war.

And... Well Texas is Texas and does Texas things. Can't explain it.

If you look at population centers and distribution, and extrapolate past those to the full state line, it does make more sense. The more west you go, the more empty it gets. Most of Texas, people wise, is south and east in the state. Oklahoma is just a vestigial burial ground for our past sins. Gotta put it somewhere.