JB believes that with the TV TOs and the additional team TOs and other time stoppages, players can go almost the full boat without needing an extended rest.
If JB, or anyone, believes that, we'll see these short rotations.
It's won him a lot of games.
Personally, I would rather have an extended bench now that gets shorter around tourney time.
There are myriad reasons why playing a very short bench (ie 6 guys) is a bad idea. Your team gets worn down (see Cooney, Trevor 2014/2015), you're very vulnerable when the inevitable foul trouble or injury occurs at the wrong time, you tend to get players that will rest on the defensive end which is exactly what this team does not need to do. Also it should be kept in mind that two of our full time players are freshman that will inevitably hit a wall later in the season.
There is no doubt that JB's frequent deployment of a "short bench" is his biggest weakness as a coach.