I don't think that about ESPN, at all. I think they play it up when we are down, and they play it up when we are good. Ratings = $$$.
As for your theory on the SEC...first of all, the Pac 12 is right there with them, and they don't get NEARLY the pub on ESPN. It's such a wide difference it's laughable. It's beyond laughable that they (and guys like you) try and defend their completely obvious conflict of interest with themselves and the SEC, especially with the SEC Network.
ESPN drives the sports world's narrative in college football. It really does. And they pound the SEC down our throats. And the SEC schedules like masters. Play no one on the road in the non-conference, win all these easy games, beat up on each other to make themselves look like the best, and let ESPN say how great you are. Polls follow. Championships (many earned, a few not so much) follow.
Just look at last year. We were expected to believe (by ESPN chiefly) that the SEC West was the greatest thing since sliced bread. I got on here multiple times to say what a crock it was, as they hadn't played anyone, and when they did play a team with a pulse, they were closer-than-should-be games. Low and behold, when they actually played teams in the bowl games, they got their asses handed to them. The Pac 12 was simply better last year, top to bottom.
Like anywhere in any business, there are people at ESPN who love ND and who absolutely hate ND. So I personally don't buy that narrative. But please, there is no doubt whatsoever, that the ESPN and the SEC are in bed together. And if you doubt that, go look at FOUR days of College Football Live with non-stop SEC Media Day coverage (as well as round-the-clock coverage on the SEC Network) in comparison with their PAc 12 coverage of media day, in which they'll focus on it for about 10 minutes of programming before going on to other stories. It's a joke.