The phrase "stylistic difference" is often used as a cover-up, though.
Why should there be a difference at all?
And why are split leaps where the line is drawn? There's already plenty of distinction, such as the music vs. no music and dance.
And yes, there are certainly Americans voicing rather rigid opinions about what's "masculine" vs. "feminine" to justify their preferences for rules on men's floor. But there's plenty of people from elsewhere, too. And even more are calling for "stylistic differences" without explaining why. (That's not pointing the finger at you, though I would be interested in hearing how and why you think they should be different if you want to share.)
The fact is: gymnastics is one of the most sexist sports there is, and there all kinds of views that sustain differences that really don't need to be there. And this does all tie back nicely to points Thorpe has made, so we're full circle, LOL.