Yes. I'm very sure that is right.
That sort of works for underweight people as well.
My RD used the term "goal weight". Which fits underweight people, overweight people, athletes and weight lifters.
Also as I was saying just the other day in another thread. You don't really have to worry that much about protein. If you eat a varied diet of Whole Foods - and eat enough calories - you get enough protein. So mostly it's figuring out how many calories you should be eating.
its not a coincidence that to determine the amount of calories you should shoot for, the tables, charts and programs also use the term "goal weight".
It even makes sense and is logical, that your goal weight determines both your calorie and protein intake. A guy trying to gain weight would then eat more calories and ( almost automatically) more protein. And a guy trying to lose weight would eat less calories and would then be eating less protein.
Something else to keep in mind. is that amount of protein you need does not go up if you gain weight. protein is not really needed to maintain fat.
However your protein requirement does go up if you are trying to gain muscle. I think this might be why you might use the term Goal Weight instead of Healthy weight. Probably don't want to imply that the body builders are healthy.
BTW, despite public opinion, protein does not build muscle. Exercise builds muscle. the amount of "extra" protein a body builder needs is pretty small and often over estimated.
on the flip side, exercise does not help that much in losing weight. Diet does the most. A 2 mile walk burns about 200 calories. You would be better off skipping the donut. But get in that 2 mile walk anyway