Yep she is colossally missing the point with this £20 shop thing.
Even when she renamed her “Potatoes” article, the new title referenced how people in dire straits don’t necessarily want to batch cook - and yet here she is, on her £20 project, batch cooking.
And what if you can’t batch cook because you don’t have the space to store the food? In some rentals, you may not even have a freezer - just one of those little fridges with a single freezer drawer.
And what about other weekly essentials like soap, toothpaste, toilet roll, etc? Is that meant to come out of the £20 as well?
What about cooking times and methods? If you have to watch every penny, it’s hardly economical to be making two different meals and using two rings instead of one. What if you don’t have a slow-cooker, or a blender, or a microwave?
What if you don’t have easy access to a supermarket? Why isn’t Jack thinking about what people could buy from local corner shops (they can be more expensive for some things, but really good value for others e.g. spices, pulses), or markets? (And she probably hasn’t thought about this because it doesn’t apply to her - she’s incredibly self-centred to the point where she is completely incapable of seeing any other person’s position).
She just hasn’t thought this through at all.