Who exactly defines "how a social network is meant to work?"
The users do. Facebook will see declining participation if they keep taking user-hostile actions like this. People need to feel they are in charge of their feed (at least mostly in charge), but if they no longer control who sees their content, or which content they see, and hence become unhappy using the service or use it less, that's going to be a big problem for FB.
The users do. Facebook will see declining participation if they keep taking user-hostile actions like this. People need to feel they are in charge of their feed (at least mostly in charge), but if they no longer control who sees their content, or which content they see, and hence become unhappy using the service or use it less, that's going to be a big problem for FB.