I've sat in interviews for most positions (at where I work, anyway). The only one that requires actually knowing who the person is (gender wise, race wise, etc) is sales. Even in that case, it's only because of preexisting prejudice.
These companies will figure out sooner or later that anonymous interviewing is the only solution. Those who benefit from the status quo will protest, "rightly so". Those who don't won't be around to complain, and so a kind of survivorship bias persists.
I think you give up way more with anonymous hiring than you would ever get in return. How do you gauge verbal and non-verbal communication skills? Do they mesh well with the team. Once you drop the in-person interaction you lose more than just the ability to discriminate.
I don't have any issue with this process beyond the use of 'majority'...Maybe I'm just skeptical, but I don't see how the majority of any interview could be non-interactive... Now maybe you think it can be anonymous and interactive but that's rarely true in the way you would want it to be. If it's chat we might over-focus on whether their writing is English as a second language, same for voice. Anything less than that is non-interactive, anything more than that is not anonymous in any way.
I fail to see what any of that has to do with knowing who the person is. You might be right, though. As I mentioned, those benefiting from these things will obviously protest it.
Again, it's possible to have an anonymous candidate you can talk to. Voice obfuscation, prohibited questions (to ensure anonymity, etc.) There's nothing inherent in needing to know who the person is. If you disagree I'd love to hear some scenarios.
Sure it's more difficult to do so, which I agree with. However, the only people who will claim that as a reason NOT to do this will be people who are benefiting from how the system is already, or have something else to lose. The dollar amount to implement this is trivial.
If you've ever been to any of those anonymous chat rooms, that's an example. You could then conduct a full interview that way, and have an independent third party source check all of the credentials. Boom. You're done. This whole thing can be implemented with a standard application form (to initially remove identifiers such as name and school) and a Slack channel.
These companies will figure out sooner or later that anonymous interviewing is the only solution. Those who benefit from the status quo will protest, "rightly so". Those who don't won't be around to complain, and so a kind of survivorship bias persists.