I don't follow tennis closely enough to understand the difference. What makes the eventual winners at Wimbledon play more aggressively than at the French Open? Is it due to the environment (clay or grass perhaps) or some sort of cultural thing?
Clay is slower, meaning even off fast, angled, difficult-to-reach shots the ball bounces higher and slower, meaning you have time to get to it, thus prolonging rallies and points.
But beyond that, it's not just that players choose to play more aggressive on grass - a given shot is more aggressive on grass.
This is why the serve is more powerful on grass - you open the point with a powerful shot, and on grass that's harder to return.
See rally length differences here: https://twitter.com/i/web/status/1246341537753006082