People leaving and rejoining Amazon is supercommon. That includes Principals. It feels like most people who have been at the company for 8+ years have been out of the company for some of the period. And you can even get the colored badge for tenure from non-consecutive employment.
Maybe in the past, but not in the future. People are much more aware of Amazon's "peculiar ways" thanks to the media. People in Seattle have far, far more options these days.
