It's not that bad I believe. With the way PR companies and political parties are using astroturfing/bots to influence public opinion, asking for identification is one way of making sure the person participating in an online discussion is real. It also safeguards against online foreign influence. Additionally, I think anonymity tends to bring the worst in us. Perhaps it is because we feel less pressured by social norm…
Moreover in a lot of countries nobody will protect you once prosecutor has enough "clues" to put you in jail for something you didn't commit. Just look at the prosecution process of mr Bogatov for hosting Tor exit node [1]. It's already happening.
Or imagine the possibilities for government to track down the opposition. Well in some countries government already puts in jail opposition based on internet activities.
So even in case anonymity might make people to be a bit overly aggressive online, that's the price I'm happy to pay for my own safety and freedom. Otherwise I would prefer to stay passive network participant or even be offline.
[1]: https://blog.torproject.org/blog/statement-regarding-dmitry-...