I think you're both choosing to believe the reality you want to be true, as opposed to the one that actually is. To interpret her comment they way both of you are doing seems like reaching at best, and malicious at worst. I am no fan of FB or Zuck, but come on.

Veiled comments in departure announcements are the way the executive class communicates about their peers to the outside world.

Malicious? I think Zuck will be fine, mentioning that a sentence about him sounded kind of passive aggressive isn't exactly my definition of malicious.