I think you need to look up what 'liberal' means,
liberal | Definition of liberal in English by Oxford Dictionaries
For everyone else, the Daily Mail is the paper that supported Hitler and carries on now with blaming immigrants, single mothers, 'foreigners', etc etc for just about everything going on, it also lies like a cheap Hong Kong watch.
There have always been obese children, always.
Most children aren't obese, don't spend hours on electronic gadgets and do actually do a lot of physical activities hence all the sports clubs we have here. yes there are obese children and adults, it's a growing problem
but it's not a new problem.
It's very common for certain people to sit tutting at the younger generation as they look back over past years in their rose tinted glasses.
https://www.hsph.harvard.edu/nutritionsource/sugary-drinks-fact-sheet/
Sugar and children's oral health