[redacted due to non-useful information]
These people were told they were being laid off in October but remain on payroll. What Amazon is "bracing" for is another one of these announcements, much larger, announcing people who will actually separate from the company 90 days later. They will find out on or around the same day the WARN notice is posted.
The Meta layoff is 100% Reality Labs (they published team names, in addition to locations and roles).
Edit: parent comment removed the link, but it was https://esd.wa.gov/employer-requirements/layoffs-and-employe... .
They do not. They have no qualms about eliminating more senior roles as necessary, and generally prefer to staff in a bottom-heavy way because, among other things, it's more frugal.
> Employee separations resulting from this action are expected to be permanent. The affected employees are not represented by a union or any other collective bargaining representative.