What happened to the driveshafts?

i remember back in the day in old beam if you ran to much power through the stock driveshaft of a car it would snap it. Hence why mods strengthening the driveshaft of cars were popular. in modern beam i can push as much power as i want through the stock driveshaft and it just takes it no problem. What happened? why was this change made? The stock hopper driveshaft for example should not be able of handling 1300+ horsepower and especially not 2500 horsepower like it is now with some parts ive added. Just feels strange for a game trying to be a realistic driving simulator.

 

driveshafts broke due to axle wrap causing the driveshaft to get stretched/shrunk, so it only affects leaf-spring suspensions.