Almost certainly intentional, done for the camera.

Anyone with more than half an hour of tractor driving experience will have had the front wheels come off the ground a few times, and will know to instantly step on the clutch. This fixes the problem right away, every time.

This guy waited until he had the front end lifting, then immediately jumped out without any hesitation. Which means he planned to do just that, instead of declutching.

Because this isn't the first one found, yes. The cheap, easily available ones are more or less based on historical designs, so of course there's a resemblance.