Why is humor often directed towards specific cultures, like Jews, rather than others, like Indians?

According to Osho, humor clusters around certain cultures because it mirrors their lived personality. Jews, earthy and at ease with ordinariness, cultivated rich, self-mocking wit—humor as survival through centuries of suffering. Indians, preoccupied with holiness and spiritual snobbery, dampen playfulness, so original Indian jokes are rare. Each culture contributes uniquely; the highest humor is laughing at oneself.