The two things are actually often related: junk food is faster, more accessible, stores longer, and is cheaper per calorie. So you can be hungry, skip a salad meal (that would need to be bought fresh and prepared) while having “mcdonalds”/microwave meal/high calorie meal for your leftover meal. Third has been the pattern, following US, where it is very common for the poor to eat more calories than the rich, while eating less healthy meals.
It is! I also find unsettling how human-like the cast looks, both with the eye and the position of the elbows…