What's strange about ordering things without fat or oil, or five egg whites and one whole egg, no dairy? (I've seen cooks toss gobs of cream into their scrambled egg mixtures.) Sometimes you're eating out because you have to, not because you want to, and if you're trying to watch what you eat, and the menu offers nothing healthy, the best you can do is take components and put them together.
(My favourite brunch thing, at a place that offered spinach salad, is toast, no butter, one poached egg, and an order of spinach - no "salad." Assemble. I mean, I'm not going to stop gathering with my friends for Sunday brunch just because the other options on the menu are the Super Big Breakfast with sausage AND bacon AND ham, or the Five Pancake Stack.)
As for ordering salad, no dressing, and then a decadent dessert - well, the truth is, for some of us, it comes down to one OR the other. I've lost a hundred pounds, and one way I keep it off is by choosing EITHER a big meal OR a dessert - not stuffing in both, like most people. And yes, if I plan (and I do plan before I order) to have the Triple Chocolate Cheesecake, I will drink either Diet Coke or plain water with my meal.