That's CBS's MO...
That contract is a disaster. They know it. And they aren't even trying anymore. Milking these last 6 years out of the SEC and know the relationship will be at it's end at that point.
The one redeeming thing about the timeframe is it will give the "new" live television/streaming landscape time to settle itself out before the bid comes up.
They pay a total of $55mil/yr for the best game every week, the 4th best game on two week, and the SEC Championship game. The championship game itself is easily worth that much.