Definitions matter

[The Blue Flower]

Spasmodic: occurring or done in brief, irregular bursts: "spasmodic fighting continued"

Dysphonia: is when your voice sounds rough, raspy, strained or breathy. Hoarseness may affect how loud you speak or your voice’s pitch (how high or low your voice sounds). Many things cause hoarseness, but it’s rarely a sign of a serious illness.

So calling jr's voice 'spasmodic dysphonia' is just a technical way to say he sometimes sounds really bad. It's a description, not a disease.

[marble falls]

1. Actually, he IS the disease. His voice is just a minor symptom.

[Bernardo de La Paz]

2. Sometimes splitting hairs does NOT matter

https://my.clevelandclinic.org/health/diseases/21838-spasmodic-dysphonia

The respected Cleveland Clinic calls it a disorder.

"disease", "disorder", "illness" mean relatively the same thing in this context, though without connotations of an infection or external agency.

So what if it is a disease/disorder?
So what if it is not a disease/disorder?

Do you think he is being whitewashed when it is called a disease? Somehow being given sympathy he doesn't deserve? Disease/disorder is a description of a situation. Why does it matter to you what it is called?

[Ocelot II]

3. It is, in fact, a recognized medical condition, a disorder of the vocal cords and larynx.

https://my.clevelandclinic.org/health/diseases/21838-spasmodic-dysphonia
https://www.hopkinsmedicine.org/health/conditions-and-diseases/spasmodic-dysphonia