It's inauthentic at best. The four horsemen of the infocaplypse are drugs, pedos, terrorists, and money laundering - they trot out the same old tired "protect the children!" arguments every year, and every year it's never, ever about protecting children, it's about increasing control of speech and stamping out politics, ideology, and culture they disapprove of. For a recent example, check out the UK's once thriving small forum culture, the innumerable hobby websites, collections of esoteric trivia, small sites that simply could not bear the onerous requirements imposed by the tinpot tyrants and bureaucrats and the OSA.

It's never fucking safety, or protecting children, or preventing fraud, or preventing terrorism, or preventing drugs or money laundering or gang activities. It's always, 100% of the time, inevitably, without exception, a tool used by petty bureaucrats and power hungry politicians to exert power and control over the citizens they are supposed to represent.

They might use it on a couple of token examples for propaganda purposes, but if you look throughout the world where laws like this are implemented, authoritarian countries and western "democracies" alike, these laws are used to control locals. It's almost refreshingly straightforward and honest when a country just does the authoritarian things, instead of doing all the weaselly mental gymnastics to justify their power grabs.

People who support this are ignorant or ideologically aligned with authoritarianism. There's no middle ground; anonymity and privacy are liberty and freedom. If you can't have the former you won't have the latter.