It is your belief that because it spins it is a gyro - it is my belief that it is not - I fly a rotor system that is subject to constantly changing aerodynamic forces - if everyone of those produced a precession, the aircraft would be uncontrollable.
Up to you what you believe from a theoretical standpoint - far more learned people with aeons of helicopter design and construction experience don't believe the rotor is a gyro, I'll stick with them thanks
So, if you and your expert friends are saying that a spinning rotor has nothing in common with a gyroscope, and therefore the texts should stop comparing them as such, then you really should send a letter to the FAA.
Its too late for me, but don't let future pilots suffer the same fate of flying around with falsehoods running between their ears.