@tiefling
Where I spent a bunch of my childhood, that country inspects imports and filters for hardware that have dedicated asics that effectively create a backdoor. Naturally it's not 100%. I can understand that there is technically a security interest.
I'll note that they never put a blanket ban on imports for routing hardware, but did regulate them in a particular way. They also didn't always remove the asics, but sometimes rewired them to be the ones in control instead.
However, the policy that was adopted only bans newer hardware, not existing ones, or revisions of existing ones. And only for consumer grade products, not industrial or government supply channels.
My immediate instinct says that it's a way to create that "kill switch" that this regime has wanted, along with various other ways to block off control and communication channels that are currently used extensively by authoritative regimes (banning encrypted communication, banning VPNs, etc)