Kai has it explained in the announcement for the reintegration of ESH:
Core should still be a framework that can be reused like esh was.
No need to discuss any further.
openHAB Distro and Releases can overrule that with whatever fancy name one wants to have.
I think that will easily turn into a mess when it comes to questions and you can’t separate which version is affected really.
Maybe users don’t know the version they are using or use the wrong numbering while asking questions.
A different name can clarify this in a very simple way.