I have never heard of this as a slogan at Facebook and I have close ties there; this seems like someone venting emotionally.
It's not even a bad slogan. Company priorities should come before territorial interests. This is why it's important to work in a place that shares your values at a high level.
I may have a separate set of issues with Facebook People policies, but there are a ton of really passionate, amazing engineers working there who deeply believe in the mission (or at least their local specialty). I miss many of them very much and wish them all well.
Still going strong, though depending on the office and particular bathroom distribution seems to have problems at times.