I agree, completely.
I think there are people whose desire to eat is more controlled than it is for others. But that's like saying there are naturally friendly people... it may be easier for them to remember to do things that are seen as friendly, like smile and talk to people, but we can all do those things.
I was "naturally thin" in high school, like a lot of teenagers, and ate ANYTHING I wanted at whatever quantities I wanted. Didn't think about it at all. But if I remember now, I skipped breakfast daily, lunch at least three times a week, worked out 2 hrs three times a week, and "SO MUCH PIZZA" for me meant two slices -- so even when I pigged out, it was 800 calories once a week or so.
So when I ate "a lot" (2000 calories a day), it was fine, because I was a varsity athlete. I didn't develop intense hunger for crap food until age 19, which is when most women develop it -- as our bodies prepare our child-bearing hips

.
I thought one of my roommates is 'naturally thin' -- she's about 4'10", 85 lbs, and although she's underweight by BMI standards is actually very curvy and toned because of her TINY frame -- but it turns out she just doesn't like to eat in the quantities other people do. She'll fill a huge tray with a ton of things and end up eating maybe 250 calories of nibbles. Her body is just better at telling her when it's done, or she's just good at being conscious of it without letting us catch on.