Oliver Stone since he brought the movie Snowden to the public after no one wanted to let it be seen in theaters
Oliver Stone quote:
"it was turned down by every major studio. The script was good, the budget was good, the cast was good. It was definitely... self-censorship"
This means Oliver Stone, the filmmaker, believes in freedom of speech and expression and would surely approve of steemit's purpose and might even make a movie about it one day.