Not really, people could eat cheaper food. Not to mention that most people eat too many calories.
And the inflation will push some people toward such food choices. Maybe not that extreme, but switching to cheaper food generally means eating less nutritious food (unless you were over-spending), which is awful.
Being pushed into single-digits spending on food daily isn't outside the realm of reality. £10 a day is about £305 a month. This is a lot of money for some vulnerable groups, like large single parent families, retirees, students, some young adults, and similar.
The inflation also harms people's diets in a several ways: you must buy less food or less nutritious food for the same amount of money, and you have less money for food as other expenses have inflated. What is worse, less healthy food demand has long-term consequences to do with its supply going down and prices going up further.
In Germany I'm able to buy 1kg of flour for about 50 euro cents at Edeka. I don't know how much bread that makes, but it is A LOT. I'm certain that it is significantly more than 2880 calories.
Still there are in-between options - pasta for instance is more bang for your buck than peanut butter and is much easier to prep yourself than bread.
Anyways, it was to argue a point. Most calorie-dense foods are unhealthy if eaten alone. Peanut-butter, and flour included.
It will happen.
If everybody starts eating even more trash than usual then that will cost the government more in healthcare costs.
Eating seasonal and preserved foods is how we survived before the age of refrigeration and global logistics chains and maybe we should reconsider what is normal.
That we survived doesn't mean we had a balanced diet.
A lot of the basic foodstuffs -- dry beans, grains, milk, eggs, flour -- have all gone up in price significantly. I've seen prices double over the last two years on some of these.
In fact, I believe that the price of hot dogs have gone up more than the price of steak has. Yet people are still buying more hot dogs and less steak.