Microsoft did deviate from normal practice with 23H2. What I've read indicated that they decided to release a lot of the features early, but released the 23H2 enablement package to "rebase the version" and turn on a couple of features they had put in the code, but hadn't enabled (probably needed a bit more time to test them out).
They look like they've decided to support the "once a year feature releases xxH2" for 2 years from their initial release. See https://learn.microsoft.com/en-us/lifecycle/products/windows-11-home-and-pro
Hence the need to "rebase" the versioning.