@EmmaOvary that's true, but then nobody talks or considers sugars/macro/carbs.... there isn't this nutrients obsession.
We are however violently against processed food and snacking (grignotage is considered a crime!) . People like their patisseries. There are small . If you buy un millefeuille or une tartelette in a shop, they are tiny, 3 bites.
You have an afternoon snack, le 4 heures, always sweet, a couple of biscuits, a petit pain au chocolat from the bakery, or fruit (but peaches and apricots have a different taste than the ones you find UK/Australia) in the summer and then nothing until 7.30-8. The toddlers and babies would leave the creche and then eat nothing until dinner.
Everyone talks about the French paradox and I include Monaco in it, we eat fresh food, not industrial food, and nobody snacks, especially adults. We eat croissants from time to time, so full of butter it stains the paper bag, but the croissant comes from the bakery round the corner, not a supermarket shelf.
Nobody eats celery or carrots between meals, or hummus. Or nuts. And party food (crisps, savoury crackers, ...) is a big no. We don't eat them, because nobody eats between meals, full stop.
The key with having real meal for lunch is the seasonality. You don't eat the same thing all year round. You would have soups in winter, salads in summer. Vegetables that are roasted, mashed, dressed in salads (carottes râpées with fresh parsley is a big favourite in schools and homes) and that change over the months. Asparagus in March and artichokes in June. It is the variety in the number of food you eat in the year, whereas here , I see my friends, rotating a limited number of meal/vegetables.
The lack of variety and the processed food is in my opinion far worse than a match size piece of good cake.