Why don't people take control of their news feeds on Facebook?

People complain about their feed. They go so far as to suggest anyone on their friend’s list should not post anything that they don’t like, or don’t agree with.

Just a moment ago a gal posted, “Just spent a few minutes looking at my feed and now I remember why I don’t get on Facebook any more.”

People! You control what you see! If you don’t like it, don’t demand that other people change to suit you. You need to take control of who you let into your virtual world.

I don’t understand this.