My husband and daughter have many severe food allergies/sensitivities. I make/grow most of our food (even mayonnaise, ice cream, baking mixes, bread, etc) to avoid their biggest allergies (corn and soy). However, sometimes we do shop at organic stores like Whole Foods. They are expensive but will often have things they can eat, like cookies and such that are treats or bread so I get a week off.
I suspect if Amazon changes anything it will going to a Fresh and Easy checkout model (all self checkout with clerks to help)
I understand there are extenuating circumstances that come in to play and everybody has different requirements. Sorry your folks have these issues. You do what you gotta do to feed and protect you and yours. But, in general, I won’t be going there or using “alexa” to order up anything. Do I really want an open microphone sitting around my house 24/7? LOL!