How Successful is the Insanity Defense in Criminal Trials?

How Successful is the Insanity Defense in Criminal Trials?.

Sigmund and Freud went shopping at a local mall.  Moments after entering an electronics store, Sigmund puts a pair of airpods in his pocket.  Freud watches Sigmund put the airpods in his pocket but does not say anything.  A security guard sees the act and affronts Sigmund and Freud.  For this discussion, what possible crimes have been committed by Sigmund? Freud?  Are there any available legal defenses?

How Successful is the Insanity Defense in Criminal Trials?