Microsoft is on point with the finding. Machines are inherently non bias and non random by nature.
Things have reached a level where if machine AI makes a bias judgement based on facial structure, heritage, social status, race, belief or any other various metric that it would have a poor backlash in the boom/bust legacy of modern day social politics.
Machines are by nature inherently bias, we're still in denial. Give AI another 25-35 years and the mainstream public might be (hopefully) better equipt to deal with rational conclusions reached from information and bias.
Sad, but I can't fault MS for the finding, I don't believe they're wrong.