It is good to see some baby steps being made by more mainstream sources in thinking critically about the ideology of diversity. Here is Fox News’ Tucker Carlson beginning the questioning process:
  https://www.breitbart.com/video/2018/09/08/tucker-carlson-to-dems-since-diversity-is-our-strength-is-our-new-national-motto-please-be-specific-as-you-explain-it/

“CARLSON: They’ve talked a lot about norms, called a lot of people racist, and tried to make anyone who disagrees with them shut up. And, of course, they’ve lectured us endlessly about something called diversity as if that answers some relevant question. OBAMA: Our diversity, our patchwork heritage, is not a weakness. It is still and always will be one of our greatest strengths. BERNARD SANDERS, POLITICIAN, JUNIOR UNITED STATES SENATOR, VERMONT: Our diversity is one of our greatest strengths. HILLARY CLINTON, FORMER FIRST LADY OF THE UNITED STATES, AMERICAN POLITICIAN AND DIPLOMAT: We know our diversity is a strength, not a weakness. CARLSON: Well they all agree on that. It’s hard to know exactly what it means though other than stop talking or else. We won’t stop talking.

If the President’s going to be removed from office without a single vote from anybody outside Washington D.C., then we deserve to have some simple questions answered, and we mean answered for real, not just with a sneer and a ticket to the H.R. department for sensitivity training. So here it goes. First, how is our current immigration system made America more stable and more prosperous? In your answer, please explain what happened to the State of California? Used to be called the Golden State. Had a thriving middle class. Had the country’s best schools. Now the schools in California are a complete disaster. The middle class is vanishing, and the nation’s largest mass of impoverished people remains behind to serve a tiny pool of tech oligarchs. How exactly did that happen?

Next, how precisely is diversity our strength? Since you’ve made this our new national motto, please be specific as you explain it. Can you think, for example, of other institutions such as, I don’t know, marriage or military units in which the less people have in common, the more cohesive they are? Do you get along better with your neighbors, your coworkers if you can’t understand each other or share no common values? Please be honest as you answer this question. And if diversity is our strength, why is it OK for the rest of us to surrender one of our central rights, freedom of speech, to just a handful of tech monopolies? And by the way, if your ideas are so obviously true why does anyone who question them need to be shamed, silenced and fired? How about this question? After spending two centuries overcoming our country’s painful history of racial discrimination and hatred, why is it once again acceptable, even encouraged, to attack people on the basis of their skin color? And by the way, since we’re asking if it’s now possible to change your sex, is it possible to change your race too? If not, tell us why and be specific."

     As I see it, the idea that diversity is a strength falls apart when applied to most areas of society, and it fails when applied to the success of groups like the Chinese, and others, who do not accept it. Diversity is just the ideology of extinction for the Northern European people, who apparently have served their purpose for the elites, and have thus reached their use by date. But, the elites who are playing this game of managing the farm animals are assuming that business will be as usual in the diverse West. Indications are that this is not so, and that the bottom line is that profits and productivity will fall with mass immigration swamping. The more likely scenario is social collapse. Apparently, some of the elites hope to escape this by retreating to bolt holes in New Zealand, but they have not thought too far ahead. If it all falls apart, will they be prepared to get their hands dirty swinging a hoe to prepare gardens, when there are no more servants, and their freeze dried foods run out? I do not think that the elites are going to enjoy the long-term future that they are preparing for themselves:
  https://www.ft.com/content/0dcabab4-1c44-11e8-aaca-4574d7dabfb6