When you tout yourself as the GOAT for four years, you better deliver or there is going to be some blowback. The blowback will intensity exponentially if you faceplant so bad that you not just choke, but also quit.
When Henne and Hart said that they were coming back for one more year so that they could beat Ohio State and win a NC, then they lost to Appalachian State right out of the gate, they both caught all kinds of Hell for it. They could have quit in order to prepare for the draft, but they were good teammates so they took their lumps and kept at it. The season didn't go the way they wanted, but they salvaged what they could, enough to leave with their heads held high, top 25 with a W over Urban Tebow.
Biles is more like the 2020 Wolverines who were so woefully unprepared for the season that the only way that Harbaugh could salvage enough dignity to keep his job for one more year was to wave the white flag and cancel the season.