The whole point is that disadvantaged folks are more likely to use certificates to get a foot in the door and economic hardship in the US is not evenly represented among skin colors— not even close. Folks who don’t natively have the right accent, word usage, cultural reference points and demeanor to seem “credible” and be a “good fit” for internships or jr positions don’t have a lot of options to obtain that credibility. Things like certificates and associates degrees from for-profit colleges might be their only feasible option regardless of how smart or talented they are. Dismissing that entire group out of hand because it saves time is ignoring the economic and cultural realities of who you’re dismissing by doing so. You can separate the cultural implications of nearly any subconscious bias if your analysis is shallow enough.