[muzani]

"There are a lot of moral hazards"

I think this is really the issue. I've been in places I morally disagree with and so have many friends. You never really change the company; it just ostracizes you until they can fire you. For every person who wants to change things, there are probably 3 others who want to climb up the ladder and are happy to find a scapegoat to throw under the bus.

You'll end up depressed and demotivated, which makes it hard to do well at your job. And it's hard to find a better job in that mental state.

The difference between Facebook and a struggling late stage startup is that Facebook won't be shutting down any time soon, and if you don't like it, don't expect to be retrenched.

That said, it's possible that Facebook isn't that bad, but that's up to you to decide.