Discussing stuff outside work is different from leaking internal communications verbatim.

I left Facebook for a place where the stakes are a lot lower, but information leaks like a sieve.

It’s really disheartening to know that a lot of new coworkers would prefer to leak their “spin” to the press and actively try to damage the company when they don’t get their way.

It all depends on what the public interest angle is. In the case of Facebook the hypocrisy on display borders on the unbelievable. Facebook arguably infringes in the worst way possible on the privacy of a very large chunk of humanity but is highly offended when its own 'private' communications are exposed.

If it's good for the goose it is good for the gander and companies with this much influence on the world should welcome transparency, not oppose it. And if they do not welcome transparency then we'll have to help them along a bit every now and then.

Facebook doesn’t maliciously expose private user data in order to inflict harm on people.

No, they do it to make money. But that's all the same to me.