It depends on the person and the severity of their disabilities. I agree exposure helps many people with social anxiety. However, some people aren't capable of working no matter how hard they try.
I admit I get disability, and I've done everything conceivable to be successful, but I can't work no matter how hard I try. In addition to mental illness, including SA, I have a herniated disk which makes it impossible to sit or stand for any length of time, multiple days in a row, and periodically I can do no more than lie flat on my back in bed.
I've tried several jobs since I've been on disability even though I didn't have to, but I was unable to succeed at any of them due to my disabilities. For example, I have a degree in Chemistry and Biology, but I couldn't even do a newspaper route. I also got a job as an industrial lab technician and I was in pain but I could do it, but the next day I couldn't stand up straight, and they told me they couldn't keep me on if I couldn't work two days in a row, and that was an extremely lucrative job.
I wouldn't have studied what I studied if my plan was to end up on disability.
When I was in school I built an anti-gravity chair so I could study the hours and hours necessary to succeed at University.
That said, I try to be as productive as I can with the challenges I deal with. I'm an artist and I'm able to be an artist because I stand on an anti-fatigue mat when I'm working and I don't work multiple days in a row. Moreover, I work alone. I don't have a boss; I'm my own boss-just like at University so I can do it mentally. I work as an artist even though every dollar I may earn is a dollar I don't get from disability for doing nothing.
In addition to the herniated disk and the mental disabilities (schizo-affective disorder, generalized anxiety disorder, social anxiety disorder and depression) I suffer from fatty liver disease. Despite all these issues, I've been tolld numerous times by numerous people to get a job, including one of my therapists. How am I supposed to just get a job when I can't even do a newspaper route?
If the past is any indication of the future, I expect I will be judged harshly for this post, but being on disability and having no other choice has taught me I can't live my life according to the good opinions of other people.