I think the author is being quite unfair regarding John Allen's "prediction" on anonymity. First and foremost, it wasn't even a prediction. Second, his comment

I think the author is being quite unfair regarding John Allen's "prediction" on anonymity. First and foremost, it wasn't even a prediction. Second, his comments concerned anonymity within groups and communities, not general demographics, i.e. all users of Twitter. The referenced study linked to by the Guardian (statistically illiterate as ever) article also fails to demonstrate anonymity as a primary cause of abuse, as the author seems to imply, albeit in a passive-aggressive manner.