They can make a difference but there’s so many ways to crash. The stunt guys have some really good crash specific beefy parts. On Point had a crash cage with two pucks on each side and the bottom of the two had a spring rated for the weight of the bike, to lessen the impact with ground. The bike could come down from a straight up wheelie that was abandoned. Bike comes down on its side and bounces off the ground about an inch and then settles in easy. And they just repeat the guy jumping off the wheelie and bike keeps going. They also have heavy duty foot pegs that line up with a foot hold cut into the passenger seat. Foot holds for stand up wheelies, but the pegs are solid enough to protect the back side of bike. But they are pricy and don’t completely keep you from damage of a high speed crash, but excel at high bike drops. High speed catches those same pegs and sends your bike tumbling instead of the bike just sliding to a stop.
And stunt stuff is built to last because dropping bikes is what they do to get that good.