Isaac and the Caretakers

So I was reading this article suggesting that Isaac was mentally challenged. I was put off with it until all the evidence was in and I was semi-convinced. I say semi-convinced because I'm still not sure. What I did realize was that Isaac was incredibly passive. As I learned more about Isaac, I became more fascinated with him - he became amazingly interesting.

So let's see the evidence.

-He was born to very old parents. Older parents are more apt to have Autistic children.
-When he was young his older half-brother made fun of him and had to move out of the house because of it.
-His father took him to be a sacrifice and he seemed clueless about it.
-A servant had to find his wife.
-When Rebecca met him for the first time, Isaac was out in the field "contemplating." The word "contemplating" was placed there by English translators who did not know what the word really meant - nobody knows what he was doing in the field. The closest word in Hebrew is "to urinate."
-When he got married he moved into his mother's tent and his wife was his comfort replacement for his mother.
-Before his father died he gave instructions to the head servant about where he should take Isaac who was already an adult.
-Issac loved his first born son more than the other because his first-born made awesome stew - no other reason given.
-How did Jacob deceive his own dad in taking the blessing from his brother, even though his dad knew his voice was not Jacob's?
-Isaac was very passive. His parents took care of him, the servants took care of him and he did nothing notable in his life.
-He was always under the care of others.

What do you think? Did he have autism?