I think it all boils down to not teaching cookery in school, how it used to be - from scratch.. my two dd's in high school when doing cookery have been told to bring in a pizza base, chocolate roll etc, also cookery lessons aren't long enough so thats why it is done for quickness.
we now have a generation of kids and young adults that think throwing a pizza in the oven is cooking.
my dd's have been taught to cook by me and can do some good meals, my cookery skills were gained from my mum who those days used to make everything from scratch as there wasnt the processed foods about or big supermarkets around. and also i learnt from cookery lessons in school.