Unimpeachable sources demonstrating the problems with DEI initiatives

I often find myself confronted by people who say Republicans have made a strawman out of DEI. That it is simply about leveling the playing field and giving everyone a fair shot, not reducing standards or taking punitive measures against straight white men.

I know there have been countless examples of how HR departments have used DEI in a way that goes way beyond that, and involves loading collective guilt on people for characteristics they were born with and cannot change. But I need to cite some sources that do not instantly lose credibility because they come from right wing writers or websites. Preferably from people like Sam Harris. Progressives try to label him as a right winger, but sitting aside all the other reasons this is false: it just looks pretty dubious when he has made it so clear how much he loathes Donald Trump.

This could be very useful in general, so thanks in advance; but I do have a particular current need. I want to clarify that I already noted that I'm all for the lowercase words of "diversity, equity, and inclusion"; my problem (as with BLM) is not the slogan implicitly contained in the title, but the details of how it all plays out on the ground.