For I know two autistic people and they never needed a service animal and one of them is severely autistic. This service animal thing is just looking for an excuse to take your pet with you on outings. I'm not saying that's what's happening here but in my experience autistic people don't need service animals.
globalnews.ca

‘We weren’t welcome’: Family says B.C. restaurant denied them entry due to service dog | Globalnews.ca
"He basically stated, 'Well, what was the disability for the dog?'" dad John Wynn said. "So I'm like, okay, well, that's none of your business."