Others have covered my thoughts on the bulk of the post (ie. yes-ish, but it's complicated), but as a recovered anorexic/bulimic the ED stuff is off in ways that need correcting, for your sake and the sake of your eventual recovery.

I was anorexic/bulimic and lost about a decade of my life to it, including multiple inpatient stays. No one with a serious eating disorder has it because of "body image pressure". Body image pressure is why girls diet all the time and then have deserts with their girlfriends while talking about how "bad" they're being.

Everyone with a serious eating disorder is a total weirdo who feels like they don't fit in. Most often they feel incapable of living up to some ridiculously high standard they've set for themselves and use the eating disorder at once as a form of perfection that is easier and more concrete than the complex and constantly shifting ideal of perfection in relationships/school/work/life, and also conveniently allows them to escape from that higher idea of perfection by being too sick and too fucked up.

A lot of people with eating disorders have the same idea you do about a person with an eating disorder being a normal, simple girl who just internalizes body image issues too much and becomes a tragic heroine. In a way that's really the perfection they're chasing- the perfection of being normal and having normal issues that everyone else has- but because they're perfectionist weirdos they take it to extremes and blow their lives up over the whole thing.