He literally did all 3? He whistleblew, sabatoged by doing this in a way that it got to the media and by insulting Zuck, and he got himself fired.

Whistleblowing would be working with the media or regulators to get out as much information as possible. Sabotaging is staying at the company and thwarting their efforts. What he did (calling attention internally to messages that were already available for employees to see) barely counts as either of those. Sure, you could say he effectively quit.

Your attempts to draw parallels between the nazis and facebook by invoking schindlers list hasn’t gone unnoticed. FB has its flaws, but isnt half as bad as what you are trying to paint it to be. Not everyone who disagrees with your point of view is a nazi.

Jeez, my point isn’t that Facebook is equivalent to Nazism. It’s that Oskar Schindler and this guy both thought they were part of a bad organization, and one was way more effective at handling it than the other. Are you familiar with his story?

Maybe this was him "quitting" and he knew this would happen but e.g. he still wanted to be eligible for unemployment benefits