The only problem with blind selection, is that, sooner or later, the race/gender/sexual orientation/religion/fitness/attractiveness/age (I'm an old fart, so I can tell you a thing or two about ageism in tech) becomes apparent. I have heard story after story from peers (around my age), about passing numerous rounds of phone and test interviews, only to see the interviewer's face fall, as soon as they walk in the door.…
Getting the hiring biases out of the way early makes sense to me. The downside is that this doesn't change the broader situation or challenge it in anyway. It just says: "go ahead and apply your biases if you have them". It think, in some ways, this practice could make things a lot worse overall. It allows companies to massage their diversity metrics in ways that are acceptable and not at all challenging to the notion of what "acceptable diversity" looks like.