Sort-related question: Can restaurants refuse to serve someone who mentions severe dietary restrictions? Honestly, if I owned a restaurant, that's where I would

Sort-related question: Can restaurants refuse to serve someone who mentions severe dietary restrictions? Honestly, if I owned a restaurant, that's where I would lean because the risk is too high. If one of the cooks accidentally includes the wrong ingredient or the servers get the dishes mixed up, someone could die, as happened in this case. I know there's requirements to accommodate people with certain physical disabilities - wheelchairs, sight/hearing-impaired, stuff like that. But I've never heard of a requirement to accommodate all dietary needs.