Does anyone have an autism fetish?

Their childlike nature could maybe appeal to Mommy Dommes or older nurturing types, perhaps?

I think that you have people who will be attracted / have a fetish towards others that have certain medical conditions. I however feel that you must not take advantage of people that struggle to express themselves

I'm sure some do. There is a fetish for nearly everything. Fetishizing a person is always harmful unless the other person is in on it, and a person with autism is unlikely to be.

Being autistic myself I've never realLy got that impression from anyone

I've never heard that in my life but I guess there really is a fetish for everything.