Did the goalposts move? I thought the discussion was about restaurants being required to declare allergens, not that they have to be able to accomodate every allergy under the sun and be able to offer a meal for everyone. I don't think that's the law anywhere, either. It's a perfectly fine response to say, sorry, all our ice cream is made with milk so I can't offer you an alternative. It's only about requiring them to be able to answer the question.