Because that is literally what the article is about. Unless you're under the impression that they previously hired candidates based on something other than ability, I don't see how else you could read this. Companies typically try to hire the most skilled person they can afford for a position. MS is now incentivizing leaders to favor women and certain racial groups because their previous hiring methods didn't result in the desired number of them being hired.
> Are you suggesting that hiring diverse candidates makes it impossible to hire skilled workers? Why would that be so?
You're intentionally twisting words.