Indeed. Taking another statistically insignificant sample, or 1 (ie me):
I was born 1947, into a "working class" household. Looking back as far as I can remember, we appeared to eat far more than now:
Breakfast : cornflakes or porridge
Lunch (we called it dinner): Walk home from school for something with chips (cooked in lard, in a chip pan)
Dinner (we called it tea) : Cooked meal with meat of some form with potatoes, vegetables, or, maybe a casserole
Supper (yes, we ate yet again!): toast and jam, or, maybe cereal
We never had coffee that I recall, but, tea came with two spoons of sugar, sugar was sprinkled on cereal liberally.
Fizzy drinks were almost absent (ie, one bottle of "pop" per week (I had two brothers).
Sweets, choclolate etc were almost absent, ie "a quarter of sweets, per child" once per week, if Dad had overtime that week, otherwise, zilch.
Activity levels were much higher, a one mile walk to and from school, twice a day (we came home for lunch).
We had no car, so, any outing involved walking/bus/train
Takeaway food, other than Fish & Chips were unheard of, and,