I blame Obamacare personally.
This game is also total troll bait. It only takes one or two bad apples to wipe a crystal tower run, extreme primal, or dungeon, . A lot of the content is easy but expects people to be some level of decent.
The duty finder does allow for a certain level of anonymity and for people to be mean without any consequences since chances are you never see those people again; but you could say that about the internet as a whole.
I think part of it is the ease of the game, in some of the older more "hardcore" games had more barriers between the player and endgame and would filter out some of the less mature players.
At the same time, certain content break the learning curve (e.g. titan) and don't serve as a barrier because people can be carried through with little trouble.
