> Isn't the surprise of many that this was used for political purposes in a way that significantly differs from the expected pattern (micro targeting vs generic political advertising)?
Also not a surprise, it was well-known that the 2012 Obama campaign used targeted advertising and the media at the time raved about this brilliant use of an emerging technology. No one at the time saw fit to question them or Facebook. Let's all just be intellectually honest here: people only care because Trump made effective use of social media.