FAANG jobs attract the type of people with work ethic and ambition but they most likely feel like a well paid cog in the machine, that probably explains why they ditch after 2 years.
The hyper-capitalist notion that anyone who only wants to work 40 hours a week lacks work ethic is perverse. Jeff Bezos, for example, is proud of his Original Thought that there is "no such thing as work-life balance".
Also, Amazon != all FAANG.