We've had a bunch of senior officers go lately, but I don't know whether it is more or less than usual. Two Marine generals were just removed from command for failing to address issues of base security at an airfield that was infiltrated successfully, with multiple Harriers destroyed; I believe that was by the Commandant. We've got a remarkable number of senior officers who were removed for inappropriate relationships lately, which probably reflects a change in the social climate rather than how they behave. Eisenhower, MacArthur, CNO King, all had plenty on the side; "Bull" Halsey got his nickname at the Academy for the ardor of his social pursuits.
IMHO Obama has been a lot more deferential to the senior brass than was President Bush. McChrystal was removed for the same reasons, ultimately, as was MacArthur; he went public with his disagreements with the C-in-C. (He sure wrote a hell of a memoir, "My Share of the Task", on anyone's top-ten list of history for the Iraq/Afghan wars.) I suggest that the removals that matter were those made by President Bush in the buildup to the Iraq War, most notably General Eric Shinseki, at the time the Chairman of the JCS. He was canned promptly after telling Congress, live and on camera, that securing Iraq would need 200-300,000 troops, and for an extended period; some other posters here may remember the occasion because we discussed it here. He had the support of a score of senior generals, including his predecessor General Shalikashvili, on this issue. He earned a denunciation from Donald Rumsfeld, who made a speech decrying "old men wedded to old ways of war."
LI Beachrat may disagree, but being the Director of the CIA doesn't look like a slap in the face to me. Obama had asked Petraeus to take over after Gen. McChrystal's removal; that doesn't look like an insult either.
LI Beachrat, what do you fear Obama is planning after 2016?