I am unaware of that. It may or may not be true (my own military career has offered me multiple occasions to observe that the poor or nasty decisions alleged by the lower ranks were not actually made by the higher ranks). Still, if you have specifics, I'm interested in looking it up further.Maybe I just absorbed the hate toward him from a friend of mine over how he left army special forces hanging under fire by not sending his helicopters to them.
My own opinion is shaped partly by how I have seen him behave in the spotlight since becoming the advisor and partly from long ago first hand experience.