The answer is that any time there's a proposed fork the one that changes less rules is called "Classic" and the other picks the new name. If there's a truly amb

The answer is that any time there's a proposed fork the one that changes less rules is called "Classic" and the other picks the new name. If there's a truly ambiguous split, one side tactically cedes the name, like "Classic" did with "Ethereum". Ideally the system would have splits as a first class feature and we could have some kind of versioning system where the more splits a system had the longer its "name" or effective address