"They’ve seen how strong, supporting, and endearing a culture of diversity, pluralism, religious diversity and secularism, and self-authorship can be."

Revealed preferences suggest otherwise. Liberal city-dwellers pay large sums of money to avoid diversity. From Stanford: "There is a long-standing assumption that large, densely populated cities inherently foster interactions with a diverse range of people. Analysis of 1.6 billion person-to-person encounters among 9.6 million individuals in the United States reveals that big cities are actually pockets of extreme segregation." Archived link: archive.ph/4nFjx.