SSI is totally different. Those even with an autism diagnosis don't automatically get SSI. Those who do get SSI, every few years many have to be re-assessed, and loose qualification. Rarely does an SSI eval and a family doctor eval match. That also has a lot to do with Federal and State funding more so than diagnosis. Cuts are always being made regardless of the changes in the DSM.
County services are even different from all the above. It might still be so, years back in Florida the diagnosis had to be MR. Plain autism wouldn't gain services. In many counties, asperger's wouldn't qualify, either.
What will happen, as it has in the past, agencies will change their qualification standards, and or doctors will diagnose a person with what will gain the services.
On another note, clearly this adult in the article is not what many consider to be 'autism'. Although any within the spectrum do need aid, as the article stated, it has always been about who would need the aid more and where that funding goes. The new DSM is going to finally put into perspective a more accurate true 'autism' rate.