There is stubborn resistance to us T2D using SMBG and the reason is not given as cost, It is anxiety and leading to poor diet choices without the knowledge that nutritionists have about the various food groups, Therefore someone using SMBG must be mad, This is what I was given when my GP referred me to the nutrition consultant when I started an LC diet, But my DN supplied me with a meter and the rest is history, I am not yet history so think I made the right choice.
Like many on this forum, I am not alone and many of us use SMBG to steer our dietary course. I would not say they have an eating disorder simply because they report success with lifestyle changes they have made, and sometimes there is a tendency to become blinkered in this vision, but it is not IMO an eating disorder. It is a natural reaction to make claims such as My Dad is bigger than Your Dad, which is something that we learn in our school years, It manifests itself in politics, religion, sex life, cars etc. And yes, diets too/
Meters give us visibility into how we react to food in a way that was previously not available to anyone outside of a science lab, and this gives us control in a way that has been missing from nutrition advice in the past.
Edit to add: the main difference I see is that here we openly discuss dietary matters, and that has to be healthy. I consider the term orthorexia to be too strong to be applied here.