As I am sure you know our primary source of food is not random allotments.

It used to be. As recently S THE 1970s gardens and allotments were the source of the majority of grown food.

Supermarkets being the default is a very recent thing.

It was even common in the past post war period for green grocers to buy goods from local allotments growers.

Unfortunately the move to commercial production has done huge harm. In both product variety as allotment farmers tended to use more seed varieties then farmers do. But also in the use of steril crops.

All done purely to increase profits while reducing the diversity allowing crops to survive extra. Conditions.

Honestly if people cannot see how important such things are, they are not thinking fully,