Very common. Our secondary doesn't have the "D" word in a particular prompt, but it's the same thing. treat it as "What do you bring to the table for our Class?"
I think we're seeing these pop up in threads ad nauseum due to a post I made.
I wrote that post because I had seen too many superficial and/over privileged comments by posters on how they should answer these prompts, that it made me seriously wonder if a lot of people were getting rejected from them.
For examples, "tell us of a time that you faced adversity"?
Answer: When I received my first B grade ever...
Answer: having to retake the MCAT...
Answer: I had to live away from home when I went to college
What diversity do you bring...?
Answer: I ride horses.
Answer: I'm into being fit
Answer: I've taken lots of trips and have seen poor people
Answer: I take care of my 6 month old infant
See what I mean?