I'd agree that the outrage is fueled by the election, but I don't think that diminishes the significance of the shift. I think it was the force that was required. Previously, the trade of "all your personal information" in exchange for finding out which harry potter character you were most like seemed reasonable to people. They didn't see the value in their data, and they trusted random 3rd parties with it. Now people are seeing it.

It's like one of those 3d pictures. The "hidden" image was always there in plain sight. People just overlooked it until they stared at it hard enough.