The only way any country would agree to being part of a geographic zone with no internal border controls is if they could disallow individuals from the whole area. Not much point refusing a man entry into Germany if he can just go to France and rent a car, drive to Berlin.
Imagine how dumb, in addition to deranged, these people would have to be to look for child porn on a basically legitimate website. Misleading headline too, it didn't stop anything, it just told them "Not here"