You are not being completely unreasonable about the food. Some people are, though!
I remember when I first moved to Paris about 13 years ago, an extremely smug young Parisian told me the French did not know how to cook. This, particularly for the women, was a very big deal for him. Basically he said that people used to be able to buy and cook fresh produce, but certain generations didn't know and didn't bother. It was easy to get good food without having to bother, and wasn't necessarily too expensive. He later mentioned that the English don't know how to drink tea. I inwardly rolled my eyes and forgot about him.
But I can see that it is very true for my generation. There are some people, in some sections of the population, who are passionate about cooking, but there are many more who just do not know how to cook. My partner's mother is a wonderful cook who has a broad repertoire of French dishes, but she would never spend days in the kitchen making things from scratch. The vegetables are either the entire focus of a course, or totally absent from the meal. Especially for celebrations, most things will be bought in, especially desert. There is a very practical, unfussy attitude to food. However, ingredients must be good and fresh and will be bought from various supermarkets/markets/farmer's markets.
My partner is one of the good cooks (yay!) but he rarely has time to practise his skills. He likes to keep things fairly simple most of the time and only sometimes revels in making a complex meal. How many of us have time? Same goes for most French people I know. None of his French friends can cook. When we were staying with one couple, and had to take a cake to a picnic, I was given an instant mix and asked to do it because the girl had no idea. They lived off frozen fish etc, and ate out loads. These are what I would call middle class professionals, not poor but just not into cooking. They are completely typical for his (very large) group of well-off, time-poor friends (city-dwellers mainly). There is not this obsession with "I made it myself"! They have always expressed amazement at our cooking - "cooking" for them usually means something very basic that they actually cooked, accompanied by the rest of the meal, which they haven't.
And who can blame them when there is delicious food to be had everywhere at relatively affordable prices? (which is changing, I know). I know that all my friends are into cooking at some level, and partly that started when we wanted to eat good food, but were sick of going out and paying (loads) for average-to-terrible food. That doesn't mean all Brits are great cooks! But it is true (in my experience) that many, many French people cannot cook well, but are very, very good at eating well, at putting together delicious meals.
So there is definitely a misconception that "the French can cook" and "the British cannot", whereas the reality is that many French are now tending to leave it to the experts, while many Brits are really into cooking. And yes, many PEOPLE can't cook, whatever the nationality.
But the incredible meals I have eaten in France over the years....no words!