Because ease of access makes all the difference, and it is disingenuous to argue otherwise.
This law won't protect Trump from having his bankruptcies reported but it will protect someone who made a stupid mistake when they were younger having it haunt them for the rest of their careers or lives because it would otherwise have been the top hit when you google'd their name. It will still be there for anyone willing to put in the effort to find it of course. Just like it was in the old days.
Google will happily ruin that person's life forever for a few cents in ad clicks. Think about that.