The SEC is just like any conference. There are the really good teams, the decent teams and the bottom feeders.
ESPN pushed hard for them to always be in the championship. Especially when the SEC network came around. Was it a coincidence that there were always multiple teams ranked in the top 10? I don't think so. That garbage that they canibalize on each other is utter nonsense. They always pushed them higher so when the top tier teams beat them, it would look like huge wins.
Believe what you want and I will do the same, but it will continue as long as ESPN has a huge stake in the SEC Network.