Or put another way: it is calorie dense. Very easy to overconsume calorie dense foods. If most of your calories came from them, you would miss the chewing you are used to.

Consuming fat makes you feel full. Like many people, I find that eating a higher-fat diet makes me feel full & able to tolerate eating fewer calories overall.

Sure. It doesn't mean you shouldn't be aware of the calorie density of all of your food. 100 calories of olive oil looks very different from 10o calories of carrots.