I don't understand what a conference-only schedule achieves. I guess the logic is if you only play eight or 10 games, instead of 12, you're reducing your chance of exposure. And if you're only going to play eight or 10 they may as well be in conference?
Because the distance thing doesn't make much sense. It's 500 miles +/- between Starkville and Fayetteville and only 300 +/- between Starkville and New Orleans (for a non-conference game with Tulane). There's no debate where I'd rather go see a game.
A conference only schedule makes sense for this year on a couple of different levels.
The schools/conference will have much better and clearer lines of communication. Everyone in the league will know where each team stands as far as the virus goes, as opposed to have to communicate with NC State and the ACC.
It allows for much more flexibility if games need to be moved around. Drop to 10 games and add a couple extra bye weeks. Then if a team has a huge outbreak and needs to take a week off, games can pretty easily be rearranged to a different week.
You could even substitute games on the schedule. Say we are scheduled to play UK and LSU is scheduled to play South Carolina. If UK and LSU are both unable to play, the SEC could conceivably have us and South Carolina play that week. In theory, anyway.