It definitely makes people blunt and then, when so many people are engrossed in socializing from behind screens, they are even more blunt. It isn't honesty either, it is just poor communication skills in general.
We are limiting ourselves from random whilst only exposing ourselves to the content and viewpoints we want to, so we are severely narrowing our exposure to different view points and topics that can bring perspective and possibly improve our own beliefs and processes.
It is a travesty.