I think I am one of the people you are referring to here. I have never dieted, I do enjoy food and alcohol, and I really like exercising and being outdoors. I find it helps me clear my mind. Thinking about it, there is an 'everything in moderation' ethos at home. It's genuinely not something I think about unless I'm asked, which happens sometimes when people are curious as to how I returned to my pre baby weight. The answer is that I did a huge amount of pram walks and ate when I was hungry. Breast feeding might have helped a bit too. I don't recognise the concept of 'food noise'. I just don't really think about food unless I'm hungry, and I don't consider it a 'treat' to eat. I read a saying once, 'Do not reward yourself with food, you are not a dog' and it stuck with me. I try to reward myself in other ways, like having a bath or going for a walk in the woods.
Interestingly, I walk my kids to and from school, which is about a 20 minute walk each way, twice a day. I can see how a generational pattern might develop, as they both really like being on their scooter/bike, and they both eat whatever we eat, which tends to be healthy and home cooked meals.
All that said, I think I have massively benefitted from genetics and a supportive partner, who does his share of the domestic work as well as pulling in a good income, which has enabled me to go part time, and I am also able to work from home 2 days a week which helps with logistics. I'm not working night shifts or constantly rushing around trying to make a train to get to the nursery, for example. I wouldn't dream of judging anyone for their weight as I think it is a complicated and nuanced issue, and I sympathise with anyone struggling with their weight, whether overweight or underweight.
ETA I'm a size 6-8, 5ft 5, about 52kg (I think, I don't have scales)