For sure, and I agree. But AFAIK, hard cheeses like that is not what most people eat and what you find in most supermarkets (outside of Netherlands). And fine, if the cheese is so hard to slice yourself, wrap a couple of slices in some plastic. Problem is when everything, including semi-hard cheese, is double wrapped in plastic.
Because it's unnecessary. For example, where I live, the cheese package is plastic first, and then in-between each slice there is a sheet of plastic. Then since the packages only contain 10 slices, people buy multiple of them.
It's a complete waste when there could be just one layer of plastic, or people could buy block cheese (unless, they live in Netherlands, only buy hard cheese and who's name start with "j" and ends with "acquesm")
The point is try to figure out how we can replace plastic with something better, in the cases where it makes sense to replace it. Common things like cheese-packaging makes sense to care about, as all other plastic packaging.
So, it is simple: replace plastic with paper. Done. Ditto for almost everything else packaged in plastic. Besides, the plastic that ends up getting burned releases very poisonous compounds into the eco-system (dioxins).
I can see an argument for why buying bread sliced is nonsense, ditto with Salami (though some of that Hungarian stuff is quite impressive, wonder how it would fare on the Rockwell test) and other stuff people slice up for sandwiches.