Re: Kind of a self-answering question ?
Some things in life are just not realistically enforceable by legislation, or by expectation, and we have to find ways of living with that reality that do not end up holding others hostage to impossible demands.
Yup. Fortunately deaths from allergic reactions are rare, but allergies do seem to be increasing. So I think it's a case of figuring out why this is*, and what the best response should be. Awareness helps, ie recognising the signs of anaphalaxis and that it's a medical emergency. But there's not a lot people can do other than call an ambulance, but that may be too slow. On a campus like a Disney park, they have their own medical services, so could potentially respond faster. But I guess it's also a case of having things like epi-pens available, and knowing how to use them.
In the UK case, people tried going to a pharmacy for help, but apparently a shortage of epi-pens meant they couldn't. So that could be a possible solution, ie fix supply chain and cost, make it part of food safety/first aid training. Downside is restaurants are open when pharmacies might not be, so whether it's something that could become part of the AED rollout. Dial 999, get told the nearest location of an epi-pen stash. But one of the sad things about that case was the kid & their parent knew what was happening, but didn't have the pen they were supposed to be carrying.
*This hypothesis intrigues me-
https://en.wikipedia.org/wiki/Hygiene_hypothesis
As a kid, I was always out playing and seem to have a pretty good immune system. But I'm also part of a trial investigating metabolic syndrome. Part of that was getting an allergy test, which was kinda fun. A grid drawn on my back and various substances poked into me. Tried to get the nurse to let me play battleships with the person in the next bed, but they were amused, but wouldn't join in.