From the EOS ICO website:
REGISTER
If you hold EOS Tokens in an Ethereum account and fail to register your Ethereum address to your EOS public key, then your EOS Tokens may not be part of a Snapshot (as defined below) a third party may wish to create when the EOS Tokens become fixed and non-transferable on the Ethereum blockchain. In order to be part of such Snapshot, it is important that you generate an EOS public and private key pair (see the Generate EOS keys button below) and register your EOS public key with your Ethereum address prior to the EOS Tokens becoming fixed and non-transferable on the Ethereum blockchain which will occur within 23 hours after the end of the final period on June 1, 2018 at 22:59:59 UTC.
I think this lays to rest the accusation that according to EOS themselves the EOS token has no 'use', and indeed it does not (except for trading until the cutoff date).
The coin or token that will be released in accordance to the above (snapshot) will however have very real use and value.