They're upset Big Ten teams are getting pushed out of the playoff and think that this would help. As a Gopher fan, I prefer they keep the divisions if we ever want a chance at winning the league.
https://www.si.com/college-football/2018/12/06/jim-delany-big-ten-divisions-realignment-playoff
https://www.si.com/college-football/2018/12/06/jim-delany-big-ten-divisions-realignment-playoff