When I worked for AMZN (2012-2015, Prime Video & Outbound Fulfillment), attempting to sweep issues under the rug was a clear path to termination. The Correction-Of-Error (COE) process can work wonders in a healthy, data-driven, growth-mindset culture. I wonder if the ex-Amazonian you're referring to did not leave AMZN by their own accord?

Blame deflection is a recipe for repeat outages and unhappy customers.