Speaking as Author / Editor of RFC 9580

the bis draft version that became the base for “librepgp” was a draft that contained commits from Werner not sanctioned by the then OpenPGP Working Group. It was a mix of WG and his own work. It caused the then Area Director to close the OpenPGP WG. When it later re-opened it added a new WG Chair and a new Editor (me) to the document whom had “no skin in the game” but with lots of IETF process experience to restart the effort. I and other people went through every single commit to determine if it had WG consensus and we removed those parts that didn’t.

So this sentence is incorrect: “ The draft that became LibrePGP was the closest to any sort of consensus that was achieved in a great many years of effort.”

This is all in the public record of the OpenPGP mailing list archives, the OpenPGP design team updates there and the public gitlab instance we used.