That article does not refute what I'm saying.
By the 1990s, affirmative action was already in full swing. Universities and large companies were already on board, as was the federal government and many state and local governments.
Additionally, by the 1990s, the national media had been very sympathetic to affirmative action policies for at least 20 years—you would have been hard-pressed to find a single American who didn't know those policies existed. So it was already perfectly reasonable (and expected) for a profit-seeking non-racist [1] to view black resumes with more suspicion.
[1]: And indeed, the studies mentioned in the article showed that blacks and whites exhibited the same bias toward black resumes.
Furthermore, regarding the studies mentioned in the article, there are some important question that need answering (by someone who has access):
1. To which employers did the subjects apply?
2. How were those employers selected?
3. Did any of those employers have pro-black affirmative action policies?
4. If the studies did include employers with pro-black affirmative action policies, how heavily were those employers represented in terms of applications? This is important: even if only 2% of employers have pro-black affirmative action policies (a number far too low), those employers might employ (directly or indirectly) 60% of Americans.