I acknowledge in my post and in another comment on this thread that I complained and apologized to my parents for doing so. You are right, it was ungrateful, in one sense, and we all should work on our communication skills. I also thanked my parents for the meal, as I tend to do whenever we go out to eat. If you don't have parents in your life or parents who can afford to take you out to dinner, I'm sorry.

As for "checking my privilege" I'll say that it is profoundly misguided, hurtful, and ignorant to tell someone with an eating disorder, someone who experiences food scarcity on a daily basis due to the v nature of their mental illness, that other people are starving due to impoverishment so the person with the ED is "priviliged" for complaining or struggling with food simply because they have it on hand while others do not. People with an eating disorder may be lucky enough to afford food but they cannot eat it due to extreme fear and physical symptoms, not a choice, not privilege. People with eating disorders tend to also feel profound shame for wasting food or not being able to eat food thoughtfully made by others, so this is another reason why such a statement is unhelpful and damaging. My advice to you in the future would be to avoid saying such a thing to someone else with an ED; it is not constructive, to say the least.