Not joking there. If an obese person loose 10 lbs, that saves NHS thousands of pounds. Hence NHS now spending hundreds of pounds per client on weight managment courses. I am on one of them and these courses works. They also saves NHS money after costs has been paid.
I think your attitude in itself will mean you achieve what you want. More importantly, its all very well for us to point fingers, but in terms of helping people to lose weight, examples and motivation from others who are trying to do the same seems a better path than being coached by a ripped personal trainer, or some waif hopping about on TV, who might just make everyone feel worse.
( Parallel but o/t but some of the most successful youth programs to keep them out of trouble are run by ex-bad-lads, because the potential troublemakers are more likely to listen to someone who has been in the same position.)
Actually it might be quite painful, but I'd guess it would be very useful for people who are trying to lose weight to look back to see how it all started. I know one of my daughter's teen friends who is putting weight on fast, has a constant supply of crisps and chocolate in the cupboard (I mean tons of it), so every morning and afternoon guess what ?
On the other hand, when I was that age mum used to cook suet dumplings for pudding, with brown sugar in the middle and golden syrup all over the outside. But I walked or cycled everywhere.
Some pics of my dad in WW2 in the desert with his platoon show they are all very bony. Perhaps they were malnourished, but I still remember he could sprint faster than me until I was late into my teens. I can't even beat my 11 year old.
One thing that has changed completely in society is the level of self-discipline and personal responsibility; that covers a massive range of activities and attitudes. In some ways its no surprise that we indulge and can't regulate. That includes driving around in gas-gobblers - its the same self-indulgence in a different form.
Now where's my Buddha, I need to calm down.