The issue isn't whether or not Bruce Lee was for real.
It has more to do with the cause celebrity that permeates the western masses.
We give credence to someone because they are a star. For pete's sake, people hang on celebrities words about politics and the environment these days! lol
People actually give credence to Jack Black and his Kung Fu too!
Do you think in 20 years someone will ask about whether or not Jack Black is for real?
That's like asking if David Carradine's Kung Fu was for real.
Bruce was fit, knew some TCMA and dabbled a lot in a few other things but make no mistake, he was first and foremost interested in becoming a movie star! And he did become that and he burnt out in a crashing flaming nose dive.
So, he should have been more careful about what he asked the universe for. :)