It's interesting how many PP on here are negative in the way they talk about thinner people and smaller eaters.
The title says 'skinny' rather than the more positive 'slim'.
'Restricting' what one eats rather than 'moderating', and it is seen as negative, rather than something quite normal that humans do day-to-day regarding most activities (eg generally we restrain ourselves from rushing across a road when traffic is coming, or sleeping too long after the alarm has gone off so that we are late for work).
" constant discipline which much be hard and a bit boring." Rather than 'they listen to their body, enjoy what they eat and stop eating when they have eaten what they need '.
"3 packets of biscuits would stretch much further than 5 bananas would." But 5 bananas (or, for 90p, I'd rather have 5 apples) will keep you fuller for longer than 3 packets of biscuits.
" I find it hard to believe people's appetite is that small." Yes, whether you believe it or not, it really is. I see it again and again on here that the number of calories of my TDEE (ie that I need for a stable weight) is dangerously low. Maybe the issue is what you are thinking, rather than what they are eating.
"there are women out there subsisting on steamed vegetables and rice " Or maybe they are not 'subsisting' but eating what they need, and quite possibly enjoy, in order to lose or maintain the weight they wish to be.
There are comments about just nibbling on a lettuce leaf - as if that's a bad thing - and the frequent suggestion that high calorie foods are tastier than low calorie ones. Personally I like lettuce (in moderation!), some types are quite tasty and I find a lot of ready meals have a very samey 'ready meal' taste which I find unpleasant. But there are lots of low calorie foods that are delicious. (eg apples, as above).
And I find the ideas around poor people and rich people confusing. I've been poor and now I'm 'comfortable' (rather than rich), I've been busier and less busy, but I've always weighed the same. I've never enjoyed either cooking or exercising, but I eat quite a bit of raw food as I prefer the taste and texture (ker-unchy carrots - yum!) and don't consume more calories than I get around to burning. Many of my eating habits developed when I was too poor to afford much in the way of sweets, cakes, etc, so I still regard them as a treat to enjoy only occasionally.