Hey OP, I am similar to you in most aspects but I'm a lot younger, so please take it with a grain of salt...
I also live in Texas, and honestly I thought a lot of less privileged folks or ppl with family ties would love to be in your situation and just leave? It's not just about politics. Even if tomorrow Texas becomes a liberal stronghold, it will still take possibly at least a decade to fix ERCOT, the climate issue, and flooding issues (if you live in Houston)... This clusterfrick alone was enough to prompt me to never live in Texas again once I'm done with grad school
Besides, my understanding is that there are a few left-leaning metro areas which have suburbs (or live in the city!) that don't cost that much more to live in compared to mid-/upper-mid-class TX suburbs, so there's probably no financial disincentive to move either