I don't see signing away your right to access the legal system as an essential part of a settlement. You could just sign a settlement that says, here's what hap

I don't see signing away your right to access the legal system as an essential part of a settlement. You could just sign a settlement that says, here's what happened, here's the remedy we've agreed to. And then if one party decides to sue later on, the existence of the settlement could be used by the other side as extremely strong evidence that the matter was already concluded to the mutual satisfaction of both parties, and the lawsuit should be dismissed. But it would be "this was already handled" rather than "the plaintiff gave up their right to address this matter in court." As far as the military goes, that's very much a special case, and it should remain so. The fact that you can give up certain fundamental legal rights by joining the military is not an argument for being able to give up certain fundamental legal rights by accepting a click-through agreement from Sony.