I'm not really sure what point you're trying to make. Your arguments are all over the place. You say the fans hated UT, which I agree with, but that didn't start until second-gate and the CCG right before we left the Big 12?
I would argue that NU fans started to hate UT much earlier than that, almost from the formation of the conference, but it's a moot point as our fans didn't make the decision to leave the Big 12. Unless you're trying to say that NU leadership decided to leave the Big 12 because of our fans' UT hatred?
Our admin decided to look elsewhere because, again, UT insisted on starting the LHN vs. sharing their 3rd Tier rights with the rest of the conference in forming a Big 12 network. When they wouldn't do that and continued to flirt very publicly with the Pac-10, NU was forced to explore other options, as was every other Big 12 school at that time.
So no, "all of those schools" didn't leave because of Nebraska. Colorado left before we did and Missouri was most certainly trying to work the same channels as NU did to get into the B1G before they settled for the SEC. ISU also tried to lobby the B1G with a sad little website promoting them as a candidate school. The B1G just didn't want them but you better believe they would have jumped first if the option was available.
So you can't have it both ways. You can't act like the Big 12 was a stable conference that NU abandoned and that everyone would have stayed if we did. You said yourself that NU was afraid of getting left without a conference. If that's true, and the Big 12 looked like it was about to dissolve, how is it a bad look for NU or our leadership that we found a new home when we were forced by UT to have to look in the first place?
Your last statement is absolutely correct, though. I just don't understand what NU fans hating UT has anything to do with anything, except that a few lazy writers used that angle to sensationalize NU's reasons for leaving the Big 12.