From my perspective if Sessions was as bad as everyone claims there is no way Trump would have kept him on. If I had to guess Trump probably had everything he was going to do all laid out before the election was even done and had touched base with all the principals in his administration including Sessions so they would all be on the same page.
I still think that happened.
Did a lot of people he started with go elsewhere,get fired, quit or other?For sure!Just shows that Trump will not tolerate incompetence.If Jeff was incompetent there's no way he would still be there.