Lawyer here: this isn’t necessarily correct and in America it’s state dependent. There are absolutely parts of the law you can waive, including negligence of a party which is likely your bungee jumping scenario with the rope snapping.

My understanding is that when signing a liability waiver, first the acknowledgement of risk happens, and then the release of liability. State by state it can be a little bit different for releasing liability, depending on the interpretation. I looked up where I live, and that liability waiver isn’t upheld if one can prove damages (possibly death, in which case someone has to sue upon my lifeless corpse) caused by intentional recklessness, not simply neglect.

Olnly if you opt out of the new terms, at least in us.IANAL of course