I think you hit the nail on the head. I doubt it has to do with moral qualms as employees. More to do with your friends and family giving you crap for working at a company that's getting bad press.
> Having known so many people involved with Facebook for so long, I have come up with a phrase to describe the cultural phenomenon I’ve witnessed among them – ladder kicking. Basically, people who get a leg up from others, and then do everything in their power to ensure nobody else manages to get there. No, it’s not “human nature” or “how it works.” Silicon Valley and the tech industry at large weren’t built by these sorts of people, and we need to be more active in preventing this mind-virus from spreading.
You are making an uninformed judgement based on a generalization of over 20,000 people.