Why would the filmmakers make the re-enactment though? For social media? For clicks over the interwebs?
For context, by the late '20 programs were running for the elimination of Gypsies and disabled children inside concentration camps. Pieces of burned clothing were found on rooftops. Even Britain had a eugenics program against inferior races.
Not likely therefore made to cause outrage over children's rights, rather to depict established practices.