I don't think it is games that does this.
Well yes, in my opinion, mainly violent video games that these kids play alone all day long against the computer shooting and killing anything that moves in total isolation from any real human interaction. LoL
Unless you count the game of social media and consumable content that people spend their lives eating.
Oh yeah, of course, those are also undesirable drops of nastiness that help to spill the glass of a healthy human interaction. ;o)