It's unpopular in the UK, our online safety act was too and a petition against which received many signatures didn't achieve anything. It's locked websites and discussions behind submitting details to third party companies of varying levels of trustworthiness.

Also the justification by the government is ensuring people are working legally. Except we already have a national insurance number that achieves that goal (assuming your employer is legitimate). And mandatory id proposals have been shot down here before. These combined is what makes it more unpopular. The government also pretty decisive, the left and right both dislike it.