It does. But disease implies a concerted effort to eradicate it or cure it. If my leg is diseased you either treat the cause of the disease or remove the leg before it causes damage to the rest of my body.

If someone has mad cow disease I need to be careful and possibly stay away from them.

A disorder absolutely is still a negative connotation. I have ADHD and I don’t feel disordered in my behavior at all. I do everything I need to do to be successful in society. People can tell I’m different and a little quirky, but I generally have far more positive interactions than negative ones.

I’d say from my view neurotypicals often engage in behavior patterns that are disordered in their goals at least as often as I am, and seem to seek out self destructive behavior patterns I would never engage in. But they are the dominant group, so I’m the one disordered.

I would definitely like a different term. I do not have any medical treatment for my ADHD and instead use diet, sleep, exercise and meditation to manage myself. So yes, I would prefer a new term besides disorder too, maybe syndrome.

My point is only that disease causes active harm in its use, it is a very bluntly negative, a 1/10 on the positivity scale. Disorder is a 4/10, it is negative, but does a softer, more implicit harm of separating groups of humans with one having the advantage and the other the disadvantage. It isn’t good, but I don’t wince hearing it.