We must be picturing different things; I know for certain I could hold a Volvo S60 driveshaft in my hands, one hand on the gearbox end splines and one hand on the middle and move my hands apart, stretching the box end CV gaiter and the joint would fall to bits, ball bearings lolling around inside the gaiter. Putting it back together is easy for me now, but chiefly because I stripped the gaiter off and videod the joint coming apart the first time I did it..
It's easy to make a mistake and pull them too far during the process of getting the shaft off the car, and tricky to get them back together especially if you don't see it come apart