If this has any bearing at all on Cal's decision to let them play through their mistakes then it's very little. The main reason he lets the star freshman play through their mistakes is because they are usually the most important/best players on the team. They need as much game time and day to day improvement as possible, so he allows them to learn on the fly because come March, they are the players who are going to take UK to where we all want to go.Cal lets star freshmen play their their mistakes and he should as he is trying to get them out and recruit others and let them see he gives them leeway and a long leash.
UK has been just fine with Willis waiting his turn. Imagine if Cal didn't let Davis or Towns play through their some of their mistakes, and instead buried them on the bench every time they messed up. You think '12 and '15 would have played out for better or worse? Perfect example of this would be Self. He does this often with his star freshmen and look how that has turned out for KU.