That’s the essence of Chris Rocks genius. Some comedians exaggerate. Others understate. Rock just tells the truth, and still manages to make it funny.
A similar joke by Mel Brooks, who usually exaggerates: He was talking about a Civil War sketch he did on an old television show, and then casually remarked “of course it was about the Civil War we had 100 years ago, not the one we’re about to have right now“.