He is unhappy because Obama didn't produce a Golden Age for blacks, and an end to the problems of the black underclass.
From a white perspective, 2008 opened with whites having a lot of goodwill towards blacks (most of Obama's votes came from whites), and hope for a better future where blacks would integrate smoothly and harmoniously with the white community.
Those hopes are now in ashes. Increasing numbers of whites see blacks as people who will never be satisfied, always be angry, and for whom concessions are an unproductive and futile effort.
BINGO