There weren't many meaningless late season games and most of those that were still entertained.
5 of the 8 teams playing the first round of the CFP lost a game within the last 8 days and got in anyway
Ohio State vs Michigan
Clemson vs South Carolina
Georgia vs Texas
Oregon vs Penn St
None of those games mattered at all, really. The same teams got in regardless of what happened in those games. The only game that really mattered was the ACC CG getting Clemson in for the last spot over BYU/Bama/SC.
Rivalry week and conference chammpionship week, normally the two craziest weeks of the year, were basically completely irrelevant other than seeding.