The victim of ID theft is the person whose ID was stolen. The damage to banks or other large entities pales in comparison to the damage to those people.
Because afaik everything they collected was public web. So now researchers are being lambasted for having data in their sets that others released
That said, masking obvious numbers like SSN is low hanging fruit. Trying to obviate every piece of public information about a person that can identify them is insane.
Who is to blame for internet commerce?
Our legislators. Maybe specifically we can blame Al Gore, the man who invented the internet. If we had put warning labels on the internet like we did with NWA and 2 live crew, Gore’s second best achievement, we wouldn’t be a failed democracy right now.
They probably can't be redeemed and we should recognise that, but that doesn't mean they can't spend the rest of their life being forced to be useful to society in a constructive way. Any sort of future offense (violence, theft, assault, anything really) should mean we give up on them. Then they should be humanely put down.