A benefit of contriving a new term (like zibcoin/zib/ZBC/Ƶ) is that it can be used in parallel with other terms, giving time for the new term to gradually be understood and prove its worth, and always leaving the old terms understandable (in current work and archived content).

Big agreement up front isn't required, and there's no risky 'big bang' switchover date splitting software or historical records into two disjoint eras.

Instead, people just choose to use new terms incrementally more-and-more as they see the need – perhaps in reaction to either Bitcoin value-appreciation, or problems when spelling/saying other terms. Others gradually become familiar over repeated viewings, learning from context (or looking it up when first confronted).