If something like this was in widespread use it would have much more impact since countries would see whole swathes of the internet immediately go dark when they make stupid laws.
Wouldn't work with somewhere like China, but the UK might still be capable of being shamed.
I wouldn't put it passed them to require the digital ID to access the internet passed curfew.
How is someone supposed to benefit from a thing whose only function is to reduce the friction against forcing them to correlate their otherwise-independent activity against their will?
And doesn't address many of the other problems (eg accuracy)