@lispi314 @Wraithe to the latter point, indeed. You should not be able to preemptively waive your right to redress through the courts before something happens (you should still be able to waive it via out-of-court settlements, etc. after the fact).
To the former, there was a massive issue in the 90s of "shrinkwrap licenses", that are triggered by you opening the shrinkwrap, but with one small problem: they were inside the shrinkwrap and therefore not readable before purchase. US courts have ruled that particular method practically unenforceable due to that little issue of "you can't consent to an agreement you can't read beforehand" and "what counts as 'affirmative' consent?". But unfortunately that case law doesn't seem to bar shrinkwrap agreements on the outside of the wrapper (or readable through it), assuming they're sufficiently "conspicuous enough" to notice and read before removing the shrinkwrap.