Rod,
the tactics you described are correct for sure, but only as long as you can afford them, i.e. you're overwhelming your opponent both in numbers and equipment, which is the case you're quoting.
When such a situation is not you must fight, that's all. Not for avoiding grounding, rather for avoiding to be martial courted and subsequent rifling for "cowardy in the battlefield".
And, if you intend your role with honour, loyalty and morality, for not being being responsible for the death of other people.
For example, italian fighters of RSA (northern part, loyal to germans) after sept. '43 have always been fighting with a 1:10 ratio or worse. Which did not prevent them to shoot down more planes than they lost. Planes which were going to ground-level our cities killing thousands of civillians per mission.
If they applied the rules you're quoting, they'd be running all the time. Just for being shot down by the faster american aircrafts dominating our skies and letting the bombers massacre our population.
The same applies to russians in early war, japanese in late war, germans in late war etc.
But AH is a game, therefore neither my statements nor yours are correct in here

Regards
Promet