The question about what values happen to be popular in Hollywood and what values happen to be popular in normal social interaction aren't the same thing.

Quick googling finds:

Despite endless theories about height and the relative success of Hollywood figures, analysis of the heights of today’s top 10 grossing male actors shows the group only about 3 cm taller than average. It’s a different story for leading ladies however, with the top 10 women at the box office standing an average of 6 cm above the norm.

I can't find exact data on romantic pairings but I would expect that in liberal hollywood some directors purposefully do make choices about romantic pairings where the woman is taller than the man.