I used to work there and can confirm this. They beat it into you during training when you’re first hired that anything you say can become viral news or be attributed as an official statement from Apple and they are strict about enforcement.
There’s also extreme secrecy both between teams on different projects and even between teams within the same project just working on different parts of it. At least that was my experience.
I did enjoy my time there, but it was a very unique/strange development culture.