decrypt traffic

drop traffic that can’t be decrypted.

This would be an absolute fucking disaster for myriad reasons. Anyone who earnestly suggests it as any sort of solution 100% has no idea what they're talking about and should not be taken seriously.

Yes, politicians talk about trying to do something like that, but the reality is that it would destroy security for businesses, institutions, and even the government itself. Encryption and VPNs are crucial to just about any modern business of even moderate size.