That's not a selection bias. It's (if true) an actual part of the cause of Netflix engineers being happy with their job. If the headline 'People who have worked at Netflix at some time in the past are happier' then yes, only asking people who are still there would be selection bias.

Really? See, I've actually kind of been following netflix for a while, kind of excitedly. A no bullshit company that pays a lot when you are productive, and fires you when you are not. Sounds like my sort of thing.

But... if they also require you to "be happy" and otherwise put yourself in the required company emotional state... that makes them a lot less attractive. Generally speaking, I lose a lot of respect for companies or people who value "culture fit" over productivity, and I generally have a hard time "singing the company anthem" as it were.

(Note, some people confuse 'politeness' with culture fit. Being polite, being able to avoid spilling your bad feelings inappropriately is part of working with other people. But being part of a culture is not.)

Is it bad that Netflix fires people who are not happy working for them?