Blaming the individual in society on obesity is totally counterproductive. The focus should be on the systemic problems -
Employment opportunities tend to be more centralised now meaning that the majority of people have to travel quite some distance to work so they don't walk, have less time to prepare meals, and spend more time on public transport.
Both parents usually need or want to work. There is less parental presence in the home and cooking healthy meals and packed lunches quickly is more challenging.
We need to work longer hours to earn enough to pay rent or the mortgage. Lower wages and insecure contracts mean that people will work longer hours, but also contribute to stress. Stress causes comfort seeking behaviour - eating and drinking.
We are bombarded with advertising for fast food, not only the brands but services like Just Eat that have normalised eating unhealthily regularly. Now you don't even have to walk to the car to get a McDonald's drive through - someone will deliver it.
Supermarkets push cheap, processed goods. My local co op (ethical my arse) sell a weekly £5 family meal deal. Great, nice and cheap. Always consists of pizza, burgers, frozen chips, chicken nuggets, ice cream, apple pie, fizzy drinks. So yes poor people can eat, but they are eating shite. Why not do a meal deal that consisted of a fresh chicken, some veggies and a bag of microwave rice instead.
Food manufacturers put shit tonnes of sugar and salt into processed foods. And even though we know this - it is still easier and quicker and cheaper to chuck some fish fingers from the freezer into the oven than buy fresh fish, debone it, buy eggs, crumb some bread, etc.
So where are the recommendations for structural changes to employment patterns? Who is demanding the passing of legislation to ban businesses from damaging behaviours? Nope - it's all about the individual putting up and shutting up. Have a shitty job, spend too much of life in traffic, heading home to your barely affordable home, and feed your kids shite, but it's all your own fault you're a fatty.