SNL satire of this: https://www.youtube.com/watch?v=zS9U3Gc832Y
This is the best example as to why DEI for companies matters. A room full of white & asian men would likely not pick up on this prior to the launch.
It's also very strange to think that team members should be responsible for speaking for their race. Imagine if your team had a black engineer and your team expected him to explain to everyone "the black perspective" or "how will black people think about this". An individual doesn't represent anyone beyond themselves and, ironically, it is racist to think otherwise. A black engineer is there to do the job of an engineer, not tell you what his racial group will think. If you want to know what a demographic will think of something you use surveys, focus groups, and market research - DEI is not relevant.