The lack of emotional (and explicitly confrontational) experiences in modern society are underdeveloping skills to deal with them.

Consequently, you get childish spats over what should be a technical disagreement, because people aren't comfortable saying "I think you're wrong, but I respect your opinion. Here are the reasons I think you're wrong..."

As the quip goes, anonymity and the lack of physical presence turns everyone into an asshole on the internet -- and then we raised most of the world on the internet.