Sorry, but I'm going to have to say that it's a foolish answer.
So I take it, it's the lady's fault because she wanted to eat at McDonalds, bought a coffee, unknowing of its dangerous temperature, spills it by accident, severely scolds herself, worse than any 'normal' cup of coffee would, so much so that it required hospital treatment. It's her fault because McDonalds can serve their food and drink to what standard their wish without consequence, even if it's dangerous to their customers? If she doesn't like dangerously cups of coffee, then she shouldn't have bought a coffee from McDonalds in the first place.
You see no problem with that?
Food poisoning is still relevant, you may get a food rating in the US, but not everywhere has a rating visible to customers in the UK, some restuarant wills put on a sign how its rated - like the AA ratings. But even so, the rating is still irrelevant, because regardless of a food rating, they could still give somebody dangerous food and if the customer suffers badly as a result they can get into trouble.
The logic still applies. It's not even normal for McDonalds to serve coffee like that.
