It's not just that. There's also mainstream media having an incentive to attack competitors. There is a legitimate case to be made if the NYTimes did exactly what Facebook did there would be even more outrage.
Also, it's Facebook losing control of data to a company that has admitted on video that they setup politicians in fake situations with hookers and use that to pressure the politician as well as create fake new stories to impugn that politician. This is a variation on blackmail and Facebook data and infrastructure is the vehicle for actualizing a part of that blackmail, even though it's libel.
There's also the pile on effect.
There's also the loss of trust in Facebook because we've been here before. Zuckerberg has variably told people to "calm down" in 2006, to claiming that privacy is no longer a social norm in 2010. And also this ideological statement “If people share more, the world will become more open and connected. And a world that’s more open and connected is a better world.” The idea that privacy is itself a detriment to the world. I found it an obscenity in 2010 when he said it, and the recent events of the past year prove that this is an embedded part of what Facebook is and it cannot be removed without destroying Facebook.
Today's statement is likewise telling.
I've been working to understand exactly what happened and how to make sure this doesn't happen again.
And is it now understood, and you know what went wrong? No.
The good news is that the most important actions to prevent this from happening again today we have already taken years ago.
The most important actions have already been taken, are unspecified, yet this mess still happened meaning those actions were insufficient. Whether this is an assessment problem, a failure to implement safeguards problem, or bad ideology, the net result is loss of trust.
I've never trusted Facebook and everything that's happened over 10 years with this company just reinforces how right I was to not trust them. That history is 95% not Trump or Obama related.