1. Find merit based, good, but (unfortunately) majority candidate. 2. Position is held open, the meritorious engineer is waiting for an offer. 3. A few minority position trickle in that are nearly as good but not quite. 4. DEI argues you should choose the minority and uses an excuse like "they're trainable" to justify racist hiring practices.
In both these systems you really only wanted to use racist recruiting practices to hire non-white non-males. But to get around the legal concern step (4) gives you plausible deniability.
It is no surprise that your average person thinks these hiring practices are racist and they lead to tokenization of the very group you're trying to protect. Consequently all the "hidden bias" DEI bleets on about is brought on by them. Things like "they were only hired/promoted because they fit in X category" where X is something innate and uncontrollable. It is not "racist" to look at a minority coworker differently if you know for the fact they weren't hired on merit. No different than the CEO's son getting a promotion to VP. Both people are undeserving.
I am in the "majority" and have been passed up on promotions and probably not hired in several jobs because of things like this. Thanks to step (4) it is difficult to sue, but it would bring me great pleasure to take a company to court because of this.
DEI should be renamed DIE to reflect it's true nature at a company. The extremist, racist, wing of HR.