This only serves to double down on an extremely bad idea. CAs are a form of wealth concentration that is both technically and practically problematic. Finding an alternative to that system is far more ideal than denying public access to DNS registration data, which also only serves as a form of wealth consolidation. DNS name registration is essentially a form of real estate.
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I don't see how this could be interpreted as denying public access to DNS registration data? It's literally just asking that whois not be used as a mechanism for CAs to validate ownership for the issuing of SSL certs. People can still run whois queries if the proposal is employed