Is there any other reason for a random cryptocurrency to make its name on the top of original Bitcoin than just parasitize on Bitcoin's brand?
I can't see similarities between BitcoinZ and Bitcoin, except the total supply. On the same note, I agree with the name of Bitcoin Cash - it is a true fork of bitcoin, uses the same technology, except block size and DAA and entitled all Bitcoin holders the exact amount in Bitcoin Cash. For ideological and usability reasons, I agree to call it Bcash as well.
Please enlighten me how is BitcoinZ different from any other Equihash fork - be it ZenCash, Zclassic, Hush, Komodo, Bitcoin Gold, Minex? What makes it valuable?