tl;dr: you couldn't be more wrong.
The long version requires a crucial observation: this wasn't one simple mistake, made in haste, ignorance, or confusion. This was a deliberate action to revert to exclusionary language. Speculating on the precise motivation strikes me as pointless; it's the action itself that is problematic.
At Joyent, I have room to make mistakes, and enough respect among my colleagues that I can take corrections without misgivings. Deliberate and repeated "mistakes" on my part would have consequences (but surely that's the literal definition of a problem employee).
In case you aren't already one step ahead of me, here is the corollary: I am protected from the deliberate and repeatedly hostile actions of others.
So: the ability (even obligation) to speak your mind, listen to others, and be protected from bullying, exclusionary behaviour?
That, my friend, is what you call security.