This looks and reads like an extension of the 2020 Federal Dept and Federal attached organization ban on use. There is additional language about Certificate of Conformity which is a import legitimacy tag required when hardware has an official government use.

Official doc here

https://www.fcc.gov/document/fcc-bans-authorizations-devices-pose-national-security-threat

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This is a ban on government use under the national security umbrella. Im sure you will still find these devices available on consumer markets and especially amazon and ebay since those marketplaces have lots of China national stores with drop shipping straight from alibaba, or reserved amazon warehouse spots.

Most of the enterprise level manufacturers that rebranded these cameras in 2020 (Axis, Vivotek, Bosch) have already swapped over to unrestricted models.

Im not sure why other companies havent changed their models (Amcrest, Paxton, Annke, Lorex) but I expect they will continue to sell their systems despite being "banned".