Having unenforceable or illegal clauses in a legal contract means the contract wasn't written in good faith, which should void the whole thing. Regardless of any "if parts of this contract are deemed illegal, the rest still stands".

It would be nice to see more proactive involvement of the legal system with this, like have some people whose job it is to challenge these consumer contracts and standardize them kinda like how some open source licenses are standardized. Modularize it, so instead of writing out the whole "limited liability" section, they could refer to an established one by name. Then each module can be the subject of study and challenge, like if a more limiting one should come with other compromises elsewhere.

I think at that point, most honest companies would just pick a standard license or contract, plus maybe a few modifications and shady ones will have more trouble hiding shit like this in the middle of pages and pages of the same boring shit you've read hundreds of times before if you actually do read these things before signing or clicking agree.

At this point, most contracts should probably be unenforceable because few people actually do understand what they are agreeing to, which is supposed to be one of the essential parts of a contract. So many parts should probably have an "initial here to show you agreed to this" at the very least. But I'm no fool, this is likely considered a feature rather than a bug for most of the people involved in making and enforcing these things.