It is funny that all the biggest and most successful companies in the USA became such, before there was something like DEI. Or if you look at foreign successful companies which are basically monoliths in regards to DEI.
NASA was doing some good work for years before Katherine Johnson came along. Heck, I'm sure people at the time would say that NASA would accept anyone that was hardworking and intelligent. Would NASA have collapsed without her? Likely not, but it was made better because of her involvement. You don't know what you miss out on by not accepting people.