Because talking = socializing, and socializing is a core concept in the human brain which evolved with the need for a community to live in, which is easier to do when you socialize with its members. So for our society socializing = good. Not socializing = bad.
And it suuucks ass.
I remember seeing this for the first time in an American movie as a kid. I was like “what in the fuck”, and I still think that to this day. It’s fucked, and the degenerate that invented it belongs to a cross.