How do you register a domain? Can I do this without using JS and Google knowing? What's that, I need to do a Captcha and use my real information so that if I post ANYTHING someone doesn't like I can be shot in the head once they find me via WHOIS which every LEA on the planet has access to?
DNS and its per-TLD registration procedures/rules and mandatory protocols for transferring your domain to another registrar (depending on the respective TLD) are about as open as it gets. Which is probably why Google et al want to kill it via DNS-over-HTTP and complex amendments to the DNS protocols themselves.
"Open", sure.