I understand your point, but that’s the same argument that keeps everyone in place to our detriment and should be planned for by the same people who are taking over. The Trump team had two choices with the RNC: keep Chairman Lardbutt Maximus in place or replace her. Once they decided to replace her, their next step should have been to work on how they were going to replace her underlings. I’m not saying it’s easy, but they know the disaster of trying to implement their agenda with everyone except the top of the food chain in an organization pissing into the tent.
Often there are good people in badly run organizations. After putting in new leadership, the best results come not from wholesale firings and layoffs but from sorting through those in middle management and in the ranks, making individual assessments, and keeping the best.