been on the team for 11 years, toxicity swirling all around him like Pigpen, but he played the game well and had survived two bosses prior to me. I only became his boss last year and was finally able to move in a different direction after documenting/coaching thru performance/attitude issues and making my case to corporate HR overlords (not located in UT). I had to be meticulous in how I documented every coaching session and review of his numbers in order to make it happen.
I guess what I am saying is that some toxic situations have environments to flourish in, whether intentional or not. It isn't always simple or obvious of what the root cause is and/or what may be enabling things and sometimes the people who can change the situation don't want to put in the effort to investigate or shake things up if other factors pass the sniff test from a 10,000' view. I get why some leaders may let the status quo stand...it can be uncomfortable to initiate and see those changes all the way thru sometimes. I feel like that was what had happened in this instance.
*None of this is to say that I know the situation with BS and the BYU AD Admin behind closed doors, just my perspective in general.