> This sounds to me like a failure of their manager to do their job to follow the standard exit process.

It's very safe to assume Apple has a standard exit process, for low level ICs.

Tan was Apple's vice president of iPhone and Apple Watch product design. This person worked for Apple for 25 years and likely a friend of top executives. I wouldn't be surprised if he just hugged everyone and casually walked out on his last day.

You assume they have a standard exit process.