Ryan, you are of course completely free to feel whatever you want, particularly since feelings are somewhat involuntary. But I am similarly free to disagree with the basis for your feeling and argue against it. There is nothing off topic about that. Moreover, if I can convince you that your understanding of the issue is flawed, thereby removing the basis for your feeling, I may even be able to relieve you of this unpleasant sensation. But at the same time, if there is something truly sinister under the surface in the US, I'd like to know what it is, even if learning it causes me to feel a similar unpleasant feeling.
Now:
Ryan said:
A cultural acceptance of platitudes that do not support the principle of separation of religion and politics.
You have an incorrect (but common) view of what "separation of church and state" means in the US and I daresay how the relationship works pretty much everywhere.
There is no "separation of religion and politics" I am aware of in Western political thought, with the possible exception of in Marxism and is
not what the First Amendment means, nor is it what is wrong with this line in the Texas Constitution. The First Amendment mandates:
1. Freedom to practice (exercise) your religion (or lack thereof).
2. Prohibition of establishing a state religion (even implicitly).
The Texas Constitution violates #2. Your framing of the issue is a violation of #1 -- as well as the speech clause of the First Amendment.
There can be no more basic/fundamental reasoning in a democracy for choosing an elected leader than picking someone who's belief structure - the concepts on which they will base their decision-making process - is similar to yours. Trying to "separate religion and politics" - as you would have us do - violates the fundamental right to freely decide - based on whatever criteria I wish (free speech), even religious ones (free excercise) - who to vote for.
The fact that this line in the Texas Constitution remains, at its core, has little to do with religion: it is an issue in how Democracy works that can be seen in other areas, such as the poorly-worded and out of date 2nd Amendment or the lack of reference to the Air Force in the Constitution (only Army and Navy). Broader, I'm sure every country's books are littered with silly or bigoted old laws that haven't been removed because no one in Congress has bothered to interrupt their golf game to do so, even without political capital being on the line.
But the fact that political capital would be on the line here? Yes, it tells us that Texans want Christian leaders and whether they would oppose removal of this for keen political strategem (no better way to support your side than to prevent the other from even running!) or just due to succeptibility to "godless commie" rhetoric (and chicks in bikinis in Bud Light commercials), this deep/serious flaw you see underlying the issue just plain isn't there.