The only reason I need a refrigerator, stovetop, microwave, and sink I'd because I couldn't easily feed myself without them. Sure I could eat out every day but that's expensive and not very healthy. All I want is is two filling meals a day and maybe a snack. I already eat shit at work is a quasi cafeteria setting so at home what do I cook? Not well because living in an apartment makes it harder to cook, cooking for a single person is usually impossible because there's so much wasted food that I won't eat while it's fresh because of our buy in bulk culture. But what if every apartment building had a communal kitchen or two where meals were served on a schedule, it would literally set restaurants out of business and that's a good thing. Eating in a communal setting would definitely cut down on obesity and overconsumption. It would also be easier to make the people vegan since nobody can cook for themselves. Also if you ever had to deal with dinner table politics with friends or family that would probably end forever because neighbors and strangers don't want to hear your asinine opinions in everything and might rightfully beat you for saying something ignorant. Obviously no alcohol which would be good for society, no large portions, strict management of food. Oh and it's fucking free.
I think you're seriously underestimating the different kinds of allergies and food intolerances that people can have. I have a severe, relatively uncommon allergy [not mentioning what it is because I'm not doxxing myself] where even someone walking past who had previously eaten said food can give me an allergic reaction and have me reaching for my epipen. Handling dishes that have been used to hold said food, even after being washed, gives me blisters on my hands. It would be impossible to create a communal kitchen that caters to every single allergy because people can develop allergies to anything and everything. For that reason, I think communal kitchens should be supplementary to home kitchens, not replacing them.