Because it has adverse effects.

Because of the negative influence that the horror series of "SCP" has on minors.

The article also mentioned that since March this year, as of April 26, the Beijing Cultural Market Comprehensive Law Enforcement Corps issued an announcement stating that the law enforcement corps had carried out special investigation and management of "children's cult" videos.

Administrative penalties were imposed on 7 illegal platforms, 33,789 illegal videos were cleared, 7,930 children's cult pictures were cleared, and 83,254 links to illegal content were deleted.

In the announcement, the "SCP series" was listed as a type of "children's cult".