There is a train of thought that when using the spec class motors (in blinky remember) the cells are not getting a strong 'work out' and that consistently only using around a third of the capacity means that the best are not being got from the cells.
For info, I only use about 2600mah in an 8 minute race doing 13.5t 12th circuit. The GT12's will be less as they only race 5 minutes.
If discharging a pack at a higher rate keeps the cell in better condition to give better performance then people are going to want to do it.
With brushless and Lipo technology reasonably settled now it's about marginal gains in motor limited classes so whether or not it actually makes a difference is still up in the air - but until people are sure they will try it to see.
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