People with complex food needs…..does this sound reasonable?

[Icannotbudget]

Posting as I witnessed something today which gave me pause- it a actually made me quite cross on behalf of the staff and other customers!
Was at a well known tourist location in uk run by a National organisation (charity). There was a lovely but small cafe on site.
A person behind me in q was discussing their dietary needs and complaining that she did not want the choices of gluten free sandwiches. She asked the staff what else GF they had ( fair enough) to which they got out the allergen sheet and tried to identify alternatives- she was so rude to them saying your offering is awful i want X food GF and most places would do that now ( not in my experience they don’t). Then she said don’t show me the allergen sheet I am disabled and cannot cope with it?). Man suggested no fewer than three fresh GF hot meals she said I do not eat beef/ chicken and don’t want soup! By this time about thirty people were in q behind and staff looked stressed and fed up.
surely it can’t be acceptable to be so rude and entitled?

Friends daughter is a restaurant manager, has come across rudeness like this with various customers dietary requirements. On the other hand there are some lovely customers with dietary requirements.

I can't eat eggs, my throat closes up. So if there's nothing suitable, i don't eat there. And, tbh, I'm quite picky anyway! Coeliacs, vegans, gf etc can surely do the same. Nowhere can stock everything for everyone. Take a snack in your bag if you really can't cope without eating for a few hours.

That's why most places resort to pre-made food, they then get moaned at for not providing 'enough choice'...