The movement from ‘medical model of disability’ to ‘social model of disability’ might answer the “Is stuttering really a disability?” question all together. Of course it is, see: discrimination.

Stutterers think ‘people can leave us or take us’ but ignore the systemic oppression that happens in an uneducated society.

I hear PWS say (and I've said this) that the listener would do better to see stuttering as a type of accent. But we can't forget that accents aren't truly neutral in society.