All legislation does is make more money for the suppliers making things smaller or a little more expensive, then the supermarkets sell more of the cheap stuff, 2 litre bottles of Lemonade are 17p in Lidl. Same price as water.
If Mc,ds is always busy, you can probably double the sales from deliveries in cities, very few cook fresh healthy meals anymore, ready meals and delivery have taken over, some never leave the house, get everything delivered.
Kids never get the chance to build an immune system, if they do get out as soon as they touch anything out come the wet wipes, even pre covid, that is where all the allergies and breathing problems come from, many of us lived through coal fires, leaded petrol, smog and trucks, buses and taxis that pumped out diesel particles and burnt oil for fun. When was the last time you topped up the oil on your car?
Pollution might be measured now but you cannot believe it is worse now than when coal fires pumped out of every chimney and vehicles had no filters even if there is now more of them.
All these Dpf filters are a con, what do you think they do when the regenerate? Break down the particles they catch, burn them with heat and pump them out of the exhaust is what they do. It all goes out one way or another. If it does not, you do not drive enough to generate the required heat, it blocks and you get a big bill.
Health is a personal choice, no legislation will change it, nor what people eat and while the NHS is free it will be abused.