He was diagnosed with Asperger's at the time of his diagnosis. ASD diagnoses were given to people who were diagnosed after 2013.

On the topic of Hans, Nazis were killing professors and scientists who weren't cooperating with them. I've read a book on the history of autism diagnostics. It said that Hans was cooperating so he wasn't murdered, not because he was a Nazi sympathiser. Went into some detail on exactly what happened to the others who didn't cooperate.