I really noticed he has some certain traits that just seem curious because it definitely wasn't intended like that by those writers. I will list why I think this and you can tell me I'm way off.

1) Wears the same thing very little no deviation. So maybe it's got the right fabric so he only wears that. 2) He only looks people in the eyes when he's really upset or wearing his sunglasses. The sunglasses are like the clothes always the same. 3) When he listens to people and talks to them he usually stands slightly away with his head down as he does something with his hands. It almost feels like stimming. 4) Either he doesn't understand the depth of his friends emotions or doesn't know how to express his emotions. 5) Hyper focused.