The author's wrong in his transcription, but there's been so much inconclusive back and forth about this UI pattern that it takes a provocative, leading headline like this one to rise above the noise.
Also consider that the speaker, an Apple employee presenting in an official capacity, is probably speaking deliberately and very democratically. This isn't something that (yet) really belongs in the HIG one way or another, so strong suggestions like this one are all you're going to get.
The author's wrong in his transcription, but there's been so much inconclusive back and forth about this UI pattern that it takes a provocative, leading headline like this one to rise above the noise.
Also consider that the speaker, an Apple employee presenting in an official capacity, is probably speaking deliberately and very democratically. This isn't something that (yet) really belongs in the HIG one way or another, so strong suggestions like this one are all you're going to get.