Rapid Rotations during High Performance Take-offs.
To be objective in examining the manoeuvres from rotation to initial climb away for aircraft having high excess thrust you should consider the two basic segments of the rotation and throw in the effects on the human occupants.
Segment 1 would be the tranistion from ground roll to lift off.
Segment 2 would be the requirement to change the vertical direction of the aircraft from horizontal at lift off to the initial climb away angle.
Ignoring smoothness/human effects the initial rotation could be almost instantaneous to rapidly increase the wing lift to fully support the aircraft weight but one should not overlook the total rotational momentum then generated which would inevitably cause some overshoot towards a potential tail strike before adequate development of the second segment.
Having lifted off at a defined safe margin above the 1g stall you now enter the next segment which is a 1g+ manoeuver to change vertical direction through to the initial climb angle during a period when continuing increasing air speed should be allowed thus maintaining an initial margin over the small increase in the 1g+ stall.
All of these factors including human effects will have been embraced in the flight tests to determine the best rotate V for weight by TPs who expect that most pilots are trained to operate flight controls in a positive and smooth manner with some emphasis on smoothness.