I am a UNC grad. And clearly you understand very little about what I am trying to tell you and others. A basketball-first fan position makes it very hard for people to fully grasp what is going on and why, and being a northeasterner also hurts, because the last time that the region as a region truly mattered to Major College football was right after WW2.
Once again I'll try to help you understand key dynamics that matter to UNC. About a decade ago, the Ram's Club did a survey of what its members thought of other Major Conferences, including in terms of possible UNC membership. Among those who identified as football-first fans, it ran about 9-1 for the SEC over the BT.
That was before UNC people saw how duplicitous the BT is with its signed secrecy contract with Maryland and its advice for Maryland to hire people to go online as Maryland fans blaming the ACC for Maryland's many failures. That alone changed a number of UNC admin and faculty views about BT sports.
Even at UNC, football is simply bigger and brings in more money. The UNC football boosters are not going to want to be in the BT, ever. And because they understand the endless appeal of SEC football, they are never going to rest while NCSU is in the SEC and they are not. Quite simply, if NCSU is SEC, its football will overlap UNC/BT football rather quickly.
UNC's athletics department can withstand ESPN grossly underpaying the ACC for another decade, but neither Clemson nor FSU will be able to without losing fairly significant ground. GT will fall even farther behind UGA. ACC football must have both Clemson and FSU (the only SEC-sized and SEC-style football fan bases we have) or else its loses much of its appeal to national TV viewers.
And the SEC, with ESPN backing, will offer both in order to keep the BT out of the South.