There are a lot of threads on MN about how names are an important part of first impressions, and there is a lengthy body of psychological research (and a fair amount of popular published science) which shows, time and time again' that people are swayed by first impressions. And those who claim not to be are typically self-deluding, and sometimes more extreme in the prejudices which they even hide from themselves.
So no, this article doesn't surprise me in the least. It's a well documented and enduring human phenomenon.
I think it does good to surface it from time to time. By discussion, the level of awareness is raised, and perhaps just perhaps people will examine their own behaviour a little more, and try perhaps to over-ride their inbuilt response.