(((Numbered)))
Thank you for this post.
I'm not a medical professional at all.
Honestly, this is merely my personal take.
I think when we are talking about Eating Disorders it is a form of Self Harm. It is used as a deliberate act of Punishment.
I believe there is a difference to a compulsion/addiction to something. With a compulsion/addiction we simply can't stop. It is a drive. Irrespective I mean some people use alcohol as their vice it can be whatever substance. It is a source of self comfort and soothing of difficult emotions.
Now whether of now what you do is classified as an Eating Disorder, I simply can not say.
Hang in there.