What are you talking about? I don't want to change anything. You are the one advocating that social media should require any comments being identifiable via id...
First I'm not advocating it - I'm saying it's inevitable - because if you want to not change society away from a model where people are responsbile for their actions, then you need enable that accountability.
It's a bit like in the good-old days of the internet when everyone trusted everyone else - life was simple and good. Then the bad actors came, and so did SSL, firewalls, n factor auth etc etc. Search engine results became less good as people gamed the rankings.
You have to adapt.
In Europe we take a different view from America - in America mass school shootings are a price worth paying for the right to own a gun. In the UK there is a presumption that they really isn't any good reason for owning a handgun, nevermind an assault rifle, so it's pretty hard to get one.
Freedom is multi-dimensional - and not absolute. I'm free of worrying my child will be shot at school, but less free to own a gun.
Same goes for freedoms on the internet - in the end it's about a pragmatic choice about what's best and I'm saying that pragmatic choice is already encapsulated in centuries of legal tradition - the internet doesn't change that - people, in the end, need to be accountable for their actions.