Give this a listen. Start at around 4:26 and listen to the Learning to Mark Few and Scott Drew segment. John Jakus talks about how culture and relationships matter more than X's and O's. You probably already know that, but it seems like you are in denial.
https://www.youtube.com/watch?v=aNrRfr36SVk&ab_channel=TheFieldOf68
Brannen is the problem, he created the problem. His resume is good, but his culture is toxic. Most of the players don't like him, quite a few of the staff don't like him. You can't build a team with a toxic locker room, no matter how well you coach X's and O's.
The players aren't soft, Brannen failed to cultivate relationships, failed to build a program where players felt welcome and accepted and overall failed to do everything off the court a coach is supposed to do.