No, he is just misunderstood.
he is boo Bradley's father
Scout hears someone laughing when the tire rolls into the Bradley yard. It turns out to be Boo Radley, who has quietly left gifts for the children in the knot-hole of a tree. This event marks the beginning of Scout and Jem's fascination with Boo Radley.
Autism Spectrum Disorder is a neurological condition, autistic people are born autistic - we do not know why people are autistic.
A person is born autistic - they do not become autistic.
In "To Kill a Mockingbird," Boo Radley is described as a reclusive character who is rarely seen. He is not explicitly identified by race in the novel, but he is assumed to be white along with other characters in the story who live in Maycomb, Alabama during the 1930s.
He's not autistic
In "To Kill a Mockingbird," Nathan Radley fills the knot hole of the oak tree with cement to prevent Boo Radley from communicating with the children by leaving small gifts. This action is a way to isolate Boo further and maintain his seclusion.
Yes, he is indisputably autistic.
An Autistic is a person with Autism.
You must be referring to an autistic savant. Basically, its an autistic person who has savant syndrome.
No, not all Autistic children are savants. Many Savants are Autistic, but most Autistic people are as normal as Neurotypical people with no particularly special talents.
A person doesn't become autistic and being quiet doesn't make someone autistic - a person is born autistic.