Yes, anyone associated with Showbiz seem to have screws loose.
IMHO, it's almost a requirement. In order to easily and successfully immerse one's self in a fictitious character in a fictional storyline, one must have the ability to detach one's self from reality. Very rare are the actors and actresses who reach the highest state of their art and stay grounded in reality. How many times have we seen thespians giving testimony about or embracing causes based on a role they played? They really believe they have developed some sort of expertise and insight simply because they memorized a script. What makes them truly dangerous are those persons in the public at large that actually listen to and believe them.