This article makes one big unstated assumption: that users wanted the news feed to change. In fact, users didn't want the news feed to change. Users hate change. And when I say that I don't mean that users are stupid and hate good things. Users have good reasons for hating change that's forced on them: it reduces the value of their previous experience and requires extra time and effort on their part; effort that they'd rather be spending on things they actually care about.
Users didn't want the news feed to change, and the users were right.
Users didn't want the news feed to change, and the users were right.