I have never had an experience like the one you describe. If anything, I'd more hesitant to come out because the person I am coming out to, might know someone who is not on the same spot of the spectrum, as I and then compare me to them.. "Oh, I have an Autistic *whatever* and you don't act like them at all," type of thing. However, that very rarely ever happens. But no, to your question, I have never had such a bad experience with someone on the spectrum that I would return to the closet or be hesitant about coming out.
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--Nyx-- What an astonishing thing a book is. Across the millennia, an author is speaking clearly and silently inside your head, directly to you... Carl Sagan