Your link talks about a conceptual project that isn't in any way running yet nor has been approved by the National Bank of Spain. How can Aragon companies comply with their INSS obligations today?
It is a responsibility of the individual to follow the laws of her jurisdiction. It is a global project, so we won't be working with every local regulatory body.
Aragon is creating a framework (as an open source project) for running Blockchain companies. We don't provide legal advice nor services, we don't take any responsibility for a hypothetic bad usage of our software.
Then I don't see why you choose to say "Death to paperwork. Avoid useless intermediaries" in your website if I still have to do all the required paperwork, same as before, plus now I need more useless intermediaries to convert ETH into fiat to pay the taxman, the bookkeeper...
