It's working quite well for them in the EU to do that when it comes to refunds on Steam. So yes you actually can apparently sign them away. You have problems with that? Tough, what are you gonna do? Sue Valve? Go ahead and come back to us years down the line with a court decision.AH but again I can not sign them away, if they make their tools available in the EU they have to comply to EU law not vice versa.
I've actually spent a lot of time thinking about this as a YT-er who earns his living on Let's Plays.
As I've said repeatedly over and over again, and you seem content to ignore the argument, this does not matter unless you bring it before a court of law and win. Between a private individual a multinational company with a very solid and big legal team that company would very likely win.LAW trumps Eula, try it sometime it's liberating.