I actually think there's an interesting piece in that question, which asks whether it is actually technically feasible, because we know there are things like the Internet archives that collect and archive pieces.
But I don't think that should prohibit us from attempting to do what I think is important, especially when we're talking from the perspectives of children and youth. Unless you understand the consequences of the information you're posting, I think you need to be making the more-than-valiant effort. I think we need to be doing the right things, ultimately, in order to make sure that there is some semblance of a right to be forgotten enshrined in law.
Then the next piece is how you actually make that take effect, and I think we're seeing that all over, from trying to regulate those who are uber to others, let alone trying to understand how you erase an identity. But I think it's a piece that needs to be enshrined, and then we figure out the “how”.