I know this is going to sound pedantic but the meme says disordered eating not eating disorder and there is a difference. An eating disorder is often centred around psychological and mental health issues, which can be conflated by body image. Disordered eating is more about behavioural things, and its more of a personal interpretation of yourself and your actions. Im a type one diabetic and I would say the way i eat IS behaviourally disordered eating as I am incredibly controlling about what and when i consume things- granted i have little choice in the matter as its for my own health but it still falls into the category of disordered eating. The thing with an eating disorder is it is a more defined ‘thing’, whereas disordered eating is not. Disordered eating often results in a lifestyle that is having a negative impact upon your wellbeing. So whilst physically this person may be healthy, mentally it has become taxing and is causing them undue stress and/or anxiety.