Hindsight is always 20-20.
Realistically, if the B1G had not tried to play this fall, there would have been no season. Even if a vaccine becomes available this year, the vast majority of people will not be vaccinated until next Spring or early Summer. By the time it would be "safe" to play, you would have missed your window.
So, it really wasn't a choice between Fall football or Spring football.
It was a choice between Fall football or no college football this season.
Meaning, a choice between TV revenue or no TV revenue.
And you know how AD's and College Presidents are going to make that choice. Every stinkin' time.
the only thing that might have derailed the season would have been a player getting seriously ill or dying. And thankfully, that has not happened.
So the B1G and the other power 5 conferences basically made a calculation that getting the TV revenue was worth the risk of games being postponed, canceled, or some players and coaches getting sick. (but not too sick).
that a messed-up season was better than no season. and that is why we are where we are.