I signed nothing. There's no fingerprint anywhere. It might be strange to you, but in some places of the world an EULA is not a binding contract signed in blood that you or your children must fulfil.
When we played for months without the link, when there were no advertisement that the link would be enforced at some point, when Sony faq informed that it was optional, this EULA is mere bullshit.
The message is that if they even try to fuck up they get to pay it.