One of the strangest excuses that the social justice ideology presents for forced diversity and hiring quotas in workplaces is that diverse people (which in their language means "non-white, non-male") somehow gives new perspectives, a diversity of ideas, into the work that's being done.
With some professions and some entities this might in some cases make some sense. If a corporation or institution is offering some kind of service to the wider public, or representing different cultures in some manner, for instance, then there might be some merit to the idea.
A museum, for instance, which specializes in representing human history and the different cultures around the world, would indeed benefit from scholars who are specialized in whatever culture the museum wants to showcase. A scholar who has been born, raised, and become an academic within the culture itself would most often be the best fit for this, especially if his field of study is that culture in particular. (In my opinion this shouldn't be an absolute requirement, but there indeed is merit in the idea that someone who has grown up within that culture, and is very knowledgeable about that culture, would rank quite high in terms of qualifications.)
A restaurant that has some sort of seasonal themes from different cultures could benefit from chefs from those cultures. For example, if the restaurant has, let's say, a Chinese cuisine month, or something along those lines, it could probably benefit a lot from an experience Chinese chef. (Again, that's not to say that a non-Chinese chef who is nevertheless very experienced in Chinese cuisine would be completely out of the question, but a competent Chinese candidate could arguably be seriously considered.)
As said, in some cases it might make some sense to look for people of a particular culture for a specific job. However, the social justice excuse goes well beyond that.
The exact same excuse is being used to pressure corporations into engaging in diversity quotas even if what the corporation is doing has absolutely nothing to do with culture or society. Yes, even corporations that are, for example, developing and manufacturing complex pieces of technology, such as electronic devices, are being pressured into this. In some cases the corporations themselves are expressing this mantra, that a diversity of employees (ie. non-white, non-male) somehow brings "new perspectives" into what the corporation is doing.
I have yet to see a single one of them explaining in detail how this is bringing "new perspectives". How exactly are diversity hires making eg. the electronic devices more efficient, faster, better, and/or cheaper. How is it benefiting the customers of the company? How exactly is a "diversity of ideas and perspectives" making better blueprints, or optimizing transistors in the electronics?
I kid you not, when you read and hear these people talk, they seem to somehow think that a person with a different skin color could come up with ideas that the white male engineers working at the company could not come up with. Not because it's a new person with new ideas, but precisely because of their different skin color, background and culture. Somehow. I have yet to see it explained how this would work.