Earlier quoted context omitted.
See my other post containing the actual text (all-caps). You're right about the 'permitted by law' bit but who knows what that actually covers? I've never seen a clear summary anywhere. License agreements are long, the consumer laws are probably an order of magnitude bigger (and that's assuming you even know which bits are relevant)
Those are all valid points, but it isn't Apple's job to solve them, so it simply puts 'permitted by law' and moves on.
My point is that Apple (and every other company) makes no attempt to define what their software is meant to be able to do. The license tries to wash their hands of everything that they can.
If I buy a camera and it can't take photos, it's not fit for purpose and I can return it. If I buy a computer to be able to (say) Facetime chat with my relatives, and it doesn't do that due to a bug or incompatibility, it's a murky legal quagmire whether or not I could get a refund.