Thanks again folks. I had not realised that the N1% was so high on approach.
I know that when jets were first being introduced into RAF service (very late 40s early to mud 50s) there were many, many crew lost as they learnt how to handle them.
The spool up time was very long and, on approach in particular, the problem was that folks converting from prop would leave it too late to apply power. With the time lag, nothing would appear to happen, so they applied more throttle. Then the power arrived all at once and they were too close to the ground to recover it.
Quite apart from training, the modern turbine moves to a very different beat than the jets of those days.