You missed the point. It's when they don't get what they want after the SEC has pushed back that will cause the trouble to fester. Schools like Kentucky, Tennessee, and the rest of the "2nd Tier' universities will resist the UT agenda and, trust me, it won't go down well. There are a dozen ways to see how the problems would develop. OU and Texas will not be in the same conference 10-15 years from now.
tejas has a way of lobbying fellow conference members to vote against the elite.
Since tejas underachieves so much they have to bring goliath down.
When the Big 12 was formed, Nebraska was Goliath. Many votes went 1-11 against the Huskers. One in particular was that
Big 12 coaches were limited in how much time they could be out of the office on the recruiting trail. Since Nebraska recruited nationally it affected them greatly. Being king of the talent rich state of Texas, the donghorns knew they'd be least affected by the rule. They could jump in the car and drive just a few hours to recruit and be back that night. Nebraska coaches would have to fly and stay overnights to recruit (i.e. More hours adding up away from the office).
The rest of the Big 12 knew they were essentially cutting off their noses to spite their faces on the rule, but being able to compete with and occasionally beat Nebraska was a big deal to them. OU was down in the dumps at the time, but since they're just a 3 hour drive to the Texas border, and they've always recruited Texas heavily, it wouldn't effect the blueblood Sooners as much as it would Iowa St, Missouri, Kansas, Kansas St. Those teams weren't beating 11-1 Nebraska teams, they were beating 9-4/10-4 (and even lesser) Nebraska teams, but that didn't matter because they were beating blueblood Nebraska who'd been taking them behind the woodshed for decades.
Bama (and recently Georgia) are the SEC elite. It would be a big deal for other SEC members school's, Athletic Depts, Alumni, and Fans to occasionally beat Alabama and Georgia. Even though Tennessee got hammered 63-38 by South Carolina, they got a nice bump in recruiting rankings for this last class after beating Bama.
Not sure what tejas has up their sleeve for when they officially join the SEC in 2024, but you can be sure it'll be something to cause festering trouble, as you said.