Bullcrap it is! So he's going to say that whatever autistic people do, which is often shared between them and is unique and odd, cannot qualify as stimming? These things that us autistic people have been saying we do, such as shirt biting and sucking, were described by us in this topic as not having to do with anxiety. So if they're not stimming since they're not based on anxiety, propose a new name for those actions for us!
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Keep your mind mature and your heart child-like.
I am an autistic survivor of childhood abuse and neglect.
I author a blog about idealism, psychology, and art:
http://thesolemndream.com