Mechta
Whilst I wouldn't disagree with you as to correct winch driver training, my old club was excellent in that respect although there is always some room for improvement. (such as understanding that the launch can trigger a thermal and change the gliders airspeed).
But most of the drivers were fairly young. - the accident problem centred around some of the old f@rts who were instructing since Noah unloaded and were doing so for egotisitical reasons or for free flying to stay current over the winter.(their words).
Before anyone jumps down my throat I stopped instructing when I was in my late 50s as I had started making mistakes and wasn't giving money's worth.
Things go wrong very quickly on a winch launch.
I have known instructors in their late 70s who were excellent but I wasn't prepared to take the risk.