Grimes is quoted here clearly stating Zach won the starting role during Fall Camp which means throughout the summer the QB spot was undetermined.
False narratives live on but the internet never dies.
Aug 31st 2020
“After months of speculation and conversation, BYU has officially named Zach Wilson as the starting quarterback against Navy.”
“We really didn’t have to say (it came from) looking at the entirety of his career, with a larger sample size than other guys, because he earned it based off of what he did this fall camp.”