HL, it's stilted at best, condescending at worst, and excellent example of political correctness taken too far.
The reaction against it is just as PC isn't it? I really don't follow the fierce opposition to this. Referring to someone as "a person" is some kind of an insult? I think you have to consider the history of mental illness and recognize what the effect of language has been in the past. It's been easier for society to exclude a "schizophrenic" than " a person with schizophrenia." Either way it is a medical diagnosis, so it's not like the latter is making something into the disease that the former isn't.