It's evident your too young to really appreciate the misery these camps created. There in lies the future.I suggest you take the time to visit one and see for yourself. However, you might just continue to scoff and one day find yourself in one.
They don't mean restore it back into what it was and ship people off to the camps again. They mean fix whatever is broken so they can preserve this place for generations as a museum and a monument to those who had perished.
Keeping these sites intact is a great thing - we should never forget the atrocities that took place and pretend it never happened. It was awful and being reminded and educating younger people about it is the best thing to prevent racism, etc.