Gear in transit.
The point being missed is that mishandling on each occasion has caused accidents. By using the mixture one does not have the option of restoring power to the other engine quickly, so why take the risk when you have other options.
One plans an alternate when the weather is bad, to have an option. However with a mixture cut followed by mishandling just after take-off the option is the coffin.
I wonder why airlines use simulators for this sort of exercise. It’s a pity CASA does not put an end to this stupidity