This sentiment was quite popular around 2009-2011 with real-name policies, the "nymwars", and what have you. The idea that the Greater Internet Fuckwad Theory [1] explained the noxious state of online discourse had taken root, and people believed, often in good faith, that peeling back the layers of anonymity from larger communities would combat bad behavior. Both Google+ and Battle.net infamously implemented real name policies during this period to very little discernible effect, and eventually reverted their policies. To this day human group interaction remains challenging to control, with or without authoritarian means.
I understand that the intended goal of this policy is likely orthogonal to the argument presented, but it's a surprisingly weak argument in face of all the previous attempts showing the contrary. You can effectively point to South Korea, where they relented on this [2], after the intended effect was shown to be practically insignificant, while simultaneously putting users at increased risk.
[1] https://www.penny-arcade.com/comic/2004/03/19
[2] http://english.chosun.com/site/data/html_dir/2011/12/30/2011...