makes sense, yet im seeing shelves being restocked with junk foods…

I'd go with this.
Most of the stuff in supermarket chains are branded food products which are mostly all toxic. 'Chains' and 'brands' are slave terminology.
A seeming food shortage encourages people to shop local fresh too, and where possible, start growing their own, and/or barter skills in exchange for services/food.
The same was enacted with the manufactured petrol shortage. All the pumps amassed a lot of thick crude sludge in the tanks below ground during shut-down when demand for supply plummeted. It was a way of clearing out all the old fuel quickly, and people duly obliged. People will similarly empty shelves.
Supporting local farmers market is great also. I have noticed on my travels (UK) that these are popping up now in various locations.