It’s an incredibly natural thing for people to hire people like themselves, or people they meet their image of what a top notch software dev looks like. It requires active effort to counteract this. One can definitely argue about the efficacy of DEI approaches, but I disagree that JUST increasing the strength of applicants will address the issue.
Rather than working to anonymize candidates, every DEI policy I've witnessed sought to incentivize increasing the representation of specific demographics. Bonuses for hitting specific thresholds of X% one gender, Y% one race. Or even outright reserving headcount on the basis of race and gender. This is likely because the target levels of representation are considerably higher than the representation of the workforce. At Dropbox the target was 33% women in software developer roles. Hard to do when ~20% of software developers are women.