Ethereum is an attempt to solve Bitcoins limited functionality, according to Ethereums co-founder Vitalik Buterin
https://ct.com/7d3uWell, I guess yes? If that so, we have no need to support any cryptocurrency related to bitcoin which are what they've said, the upgrade of bitcoin which are bitcoin cash, bitcoin cash SV, bitcoin cash ABC. Ethereum is enough as an alternative crypto.
Ethereum can't cover the breaks of bitcoin and blockchain. It is another notion for dragging ERC20 token based projects to a new network and it has big potential. Every coin has its own use and meaning. Why do users keep comparing the different versions of various projects?