The only people who actually believe that are people who have never been to Texas. There's absolutely no chance of this ever happening. Texas isn't the same as other super Christian Republican states. That is still a thing here, but it's mostly about being gun loving hard working people. Democrats being anti-gun is reason enough alone that this will never happen. Texans love their guns and low taxes.
I live in Texas.
Like I said, Dems on a weak year made an 8% gain in the state in 2016.