Some of the comments made worry me somewhat;
1. On modern swept wing aircraft it is taught to use aileron to pick up a wing,rudder should not be used. Ailerons are effective into the stall.
2.It is not full deflection of rudder that causes the damage ,it is sudden control reversal.
3. I think that 411 has hit the nail on the head, training is probably at fault and a whole generation of pilots are suffering under the misapprehension that rudder travel limiters will stop you overstressing it.