This is opinion masquerading as fact. Take for instance Ubuntu - should those releases be considered unofficial? [no] How about the python-attrs library - sho

This is opinion masquerading as fact. Take for instance Ubuntu - should those releases be considered unofficial? [no] How about the python-attrs library - should those be considered interim? [no] All versioning schemes fail somewhere and CalVer and SemVer (and certainly others) are not exceptions to this rule. The problem is you’re reducing a ton of metadata into a human-readable, compact label - and that’s inherently lossy.