My take is Obama has so much knowledge of the Kenya political situation that he is fed up with it.
His fixing of Cord over whining was timely, but I also think he did not have much time for UK and certainly no time for wailer.
The truth is he was hosted by one Auma Obama, the ride from the airport was a simple brother sister affair but the intro at Kasarani for the greatest speech ever in Kenya was UK's position (as host) usurped by a mwananchi.
During his time with civil society, he also confessed that protocol requires he deals with the elected government, the comment was almost apologetic
"The purpose of bureaucracy is to compensate for incompetence and lack of discipline." James Collins