I was a bit confused because this document is a draft and I couldn't find any mention of "approval." But here's a link to the published RFC that obsoletes the original UUID RFC 4122:
The linked document is version 01 of the draft, that draft went up to version 04 before being replaced by draft-ietf-uuidrev-rfc4122bis (https://datatracker.ietf.org/doc/draft-ietf-uuidrev-rfc4122b...), which then went up to version 14 before finally being approved as RFC 9562.
@dang, could you please update the link to this?