Not even close to likely. This isn't 1861. Americans no longer have the stomach to engage in mass blood letting over a purely political question of union.
Should Texas (and any other red states) decide to secede, there would be a ton of words thrown, but no bombs or bullets. The political will and backbone to compel a wayward state into remaining in the union through military force does not exist.
Sure they do. So long as it's on tee vee. And that's how most will experience it. Drones, cruise missiles and JDAMs dropped from several thousand feet makes it pretty easy.
We’ve had 150 years to mull over secession. Nobody will fight now, the South was right.
You’re not dealing with a government as it was in 1861, you’re up against a quasi-fascist regime more likely to behave like the USSR or china. And don’t forget that the country just south of you is ALSO a socialist-fascist country, who would side with the feds if they saw something to gain from it.