I'm not saying that Sam J. Jones was Flash Gordon - there's no such thing. No actor can be the person, that's a bunch of crap. People pay to see an actor be himself, whether he plays Hamlet or whatever.
The achievements which society rewards are won at the cost of diminution of personality.
When a show becomes a mega hit internationally, you lose a lot of privacy, you become a hider. It's not a human condition we are exposed to very often.

