I don't really agree with your line of thinking there. I do think A&M needs to distance themselves because their conference is crumbling, but their problem is not UT. I mean, by your way of thinking, ISU should be better off because they can "offer a recruiting advantage/differentiation" from Iowa.......but we all know that is NOT the case.
How do we know that? Just because they aren't ever very good doesn't mean that what they have is better than what they'd have if they were in the Big Ten.
Getting that separation provides A&M with an opportunity to elevate itself again. Whether or not they succeed, or if they only make a minor improvement, remains to be seen.