This sort of thing has actually been dealt with in the past. In 1908, William Gosset working for Guinness brewery in Dublin, published his statistical work under the pen name of "Student." Which gave us the oddly named "Student's t-test," and related distributions.

That's really weird. That said, they reference "our" work (i.e., their work) as citation [10], so one concludes it's likely a subset of the paper authors:

[10] A. Shrivastava, T. Pfister, O. Tuzel, J. Susskind, W. Wang, R. Webb, Learning from Simulated and Unsupervised Images through Adversarial Training. CVPR, 2017.

I don't know enough about the culture at Apple, but maybe they're going for a sort of "this is a team effort"? Kinda like the story of JFK asking a janitor at NASA what he does, promoting the answer "I'm putting a man on the moon".

I'm somewhat sceptical that such a policy is better than what's usually practiced, but I can imagine that it may be legitimate under the right circumstances.

One of us.

Apparently now that they aren't allowed to collude to price-fix salaries with illegal anti-"poaching" agreements, they aren't letting employees have names. Can't "poach" (normal people call it "hire") 'em if you can't name 'em.