It's so important to take these testimonials seriously, whilst also being careful we don't hurt the chances of those that are able to get the help they would have had no access to only a decade ago.
Diversity is not important in and of itself, but it has been shown again and again that people will discriminate against it over of just selecting for quality. And it doesn't seem to be the case that having to overcome their aversion to diversity then negatively affects long term outcome. Since it is hard to measure and affect what people actually think, it's easier to measure and make policy based on outcomes, and in that sense, businesses should care about diversity as a metric. And perhaps as therapy, to cure their company culture of systemic discrimination - through exposure and by taking away the power of the drivers of discrimination to affect hiring.
You say "special moderation treatment", as if it is something sinister. Have you considered that it may just be the fact that she was so broadly loved, that this happens naturally?