As somebody who is very against censorship for adults, I think this may well end up being something very good that ends up very bad.
A great many laws start well but have very different mid-longterm consequences. If they succeed with this method protecting children from porn - and that would be truly wonderful - I think they will move on to other harmful content - and how harmful content is defined could be very open to debate.
Porn, pro-ana sites, self-harm sites, extremism, gambling, drugs, alcohol (including mainstream sports sponsored by alcohol companies), junk food (obesity crisis), gaming (addictive, sedentary and a waste of time that could be spent more constructively), racism, transphobia, far-right opinions, far-left opinions, religion, atheism, anything that anybody else finds offensive, hurtful or disagreeable - including much robust discussion on MN...
Great though this sounds, once it's the norm, there's absolutely no easily-justfiable consensus for ever stopping the range and reach of all kinds of material that some people might find problematic.
Social credit is already a big thing in China - with serious consequences for those who don't do 'the right thing'. Yes, it might be 'just' giving your name and proving your age, but what could happen to your data and what list could you end up on?
Just waiting now for somebody to come on and call me paranoid and ridiculous - somebody who maybe needs to study a bit more history!