The point is that everyone in the conference plays on Saturday, so to follow it up on Tuesday puts no one at an advantage or disadvantage. Kentucky and LSU both played Saturday, so neither time has an extra day of rest over the other.
The issue comes the following Saturday after the midweek game. Tennessee plays on Wednesday this week, where UK played Tuesday. So, UK gets an extra day of rest leading up to the Saturday game.
The curious part is that UK doesn’t play a single Wednesday midweek game and every single one of their Saturday opponents have or will have played a Wednesday game prior to meeting UK on Saturday. So, in other words, UK has an extra day of rest over their Saturday opponent every week, which constitutes 50% of their schedule.
Tennessee only plays 2 Wednesday midweek games this year, both ahead of a Saturday matchup with UK.