What's the point of diversity if people can't communicate with each other, or if only educated elites within each subculture can do so? Diversity should bring different people together, not divide them artificially.
The irony here, is that diversity is actually extremely aligned with conservative values: freedom of expression and the ability to do what one wants (without regard to others).
Freedom of diversity allows for the flourishing of unique ideas and perspectives, which in turn, has many benefits, in terms of the creation of new value in unexpected ways. Diversity, in a sense, can be a synonym for independence and freedom.