that is more or less based on individual results from each machine's sequence of rinsing....
some sprayed as they ran full speed...others slowed down for saturation...
some called 'Resource Saver' machines used a recirculation method of adding water, spin/spraying the load, and then pumping that out, usually done several times...
of the ones I have used, as it gets near the end of the spraying portions, the water runs clear...
the only way to know if it was truly effective, is you would have to run the load with a full water level, and see how sudsy/cloudy the water is...
for something like towels, I would use a deep rinse....but for regular loads, spin/sprays seems to work well....
this is nothing new in technology, TwinTubs have offered spin/sprays for years...
probably the only thing that could be added....is a sensor in the drain hose, monitoring the cloudiness of the water, and keep pulsing in water until it runs clear....
I understand your thoughts of flexing the fabric....but when your cleaning around your house, and using a cloth, do you fill the sink full of water and dunk it in to rinse, or place it under running water and squeeze out the excess?