You are correct . . . but portion control is one of my problem areas. I'm a true VOLUME eater - have to feel full; consequently the lower I eat on the ED scale the more I get in my stomach. If I'm buying frozen dinners, I try to stick to 1.0 or less simply because it's easy to estimate . . . other than that, I just keep an eye on the basic Principles of Volumetrics . . . high water content; high fibre content; low fat content. Once I start on the higher ED stuff (Ice Cream for example) . . . I don't seem able to stop at a 'reasonable' portion. So, I just try not to start.
I eat a lot of veggies and, except for the starchiest ones, most are very low ED . . . the same for most fruits. I alternate between eating the all-bran type cereal (ED of 2.5) and oatmeal (ED of 0.6) with fruit and some skim milk most days for breakfast. Lunch and dinner are most often soup or low-fat protein with lots of salad. For desserts/snacks, I tend to stick with SF/FF jello or fruit with some low fat Cool Whip (ED of 2.2 for 2 tbsp serving - one of my worst indulgences, I'm afraid).
I will sometimes snack on popcorn (Orville Reddenbaucher's Smart Pop) or Puffed Wheat cereal -- both of which I think have a bad rap by Volumetrics standards. They have a relatively higher ED than I think they deserve because ED is calculated by dividing calories by weight and, of course, the popped/puffed stuff is very light. IMHO 'high air content' should somehow count like 'high water content'.
I do stay away from 'fast food' as much as possible . . . if I do indulge, I try to pick the thing that seems to have the lowest fat content and lowest carb content. Even MacDonald's will now let you include a side salad instead of fries as part of a value meal . . . so that helps . . . a little.

Even pizza can be made a bit better . . . choose thin crust with lots of veggies, no high-fat meat, and (as yicky as it sounds) blot it with a couple of napkins to soak up some of the extrta fat before you eat it.
Even when cooking I'm automatically a little fat phobic . . . I tend to use water instead of oil for stir-frying. Bake with applesauce instead of butter or margarine. I eat high fibre tortilla wraps instead of bread or buns (because I want butter on bread and buns).
Losing weight boils down to one general principle -- eat less; move more --how you get there is just a matter of preference. You can eat small amounts of high calorie foods or you can eat larger amounts of lower calorie foods. I choose the latter route.