I'll agree the tractor units are unnecessarily long, though the longer tractor the less likely it is to jacknife due to the increase in the offset angle to the front wheels due to displacement of the driving wheels being inversely proportional to the wheelbase.
And lets be honest, they do look a damn site nicer plus the sleeper cabs are actually worthy of the name rather than just being a cramped cupboard with some bunks in which is the best you'll get with euro trucks.