A rapid rotation can take a wing past its normal stall angle and still have 'attached' flow ie remain unstalled for few seconds. This has been shown in tests, and I am sure helped the Lightning 'rotation' take-offs where flight path rapidly caught up pitch angle.
The big no-no with 'slow' rotations on take-offs in normal a/c is......... - remember the s/e screen height on a wet runway and then rotate slowly? No thanks.