This is already the case in Germany and many other countries. Same for phone numbers. On the other hand, I get no spam calls, and I can't access the sites on https://cuiiliste.de/domains - censorship is amazing.

If spam calls is the price I have to pay to avoid censorship then I'm okay with that. We need resilient decentralized protocols, not centralized authoritarian bodies.

Yes, surely the German government telling it's people what to do has never gotten them in trouble in the past...