I wonder if having Amazon on your resume is a bad signal now. Risk of the candidate being a participant in a toxic environment. Also a signal that the candidate was at Amazon because they couldn't get into other FAANGs (is it common for people to select Amazon over others when holding multiple offers?)
The contrast of their own attitude and actions in the face of being in a bad situation ends of very much working to their advantage. I enthusiastically recommend many of them as a "hire." On the flip side, every so often I churn up one of the perpetrators of toxicity, and I make sure what they tell me about themselves gets meticulously captured and reported to the decision makers.
So just having worked at Amazon doesn't automatically disqualify you in my book.
Also Amazon is easier to get hired at than other big tech companies, so I guess it is some strategic decision to hire/fire easily rather than have a stricter hiring process that would also introduced a lot of false negatives (like FLAG do).