If you're one of those people who takes the whole complicated issue of race and only focuses on taking offense to Obama saying "typical white person"...
yes, you're part of the problem.
It's obvious what he meant from the beginning. He meant that the vast majority of white people of her generation, and too many white people to this day, carry a negative stereotype towards blacks that influences their behavior. This includes people that he respects and loves, like his own grandmother.
How can people be so immensely rockheaded as to not understand that?
(Oh, right. "Where you stand is where you sit". A lot of people are sitting in very, very comfy "rich white people" chairs. Especially in the media.)