My mistake, you're right. By Copyright Law, you can use original works as long as you don't accept an EULA, which is a contract.
But, at least in the case of software (and it is very criticized, there's no agreement on enforceability), acceptance of an EULA may occur when you unwrap the contents of a box, or when you use it. It is a contract that you submit to regardless of having read it, agreed to it or signed it, it is assumed you have, and the enforceability is supposed, based in this premise.
Anyway, it is not the case of the GPL, which focus on giving certain rights, restricted by Copyright Law. GPL mentors are probably critics of EULAs.
If it were an EULA, it would not be wise to ignore it, because regardless of Copyright Law, you would risk going to court to determine if you are bound by the license.