If you are referring to Safety Tip 14 in the current R44 II POH, that's not relevant. Apples and oranges. Gently repositioning blades that are already stopped using the tail rotor is acceptable. Trying to use the tail rotor as a rotor brake is not.
"14. Do not use collective pitch to slow the rotor during shut-down. Collective pitch produces lift on the blades which can disengage the droop stop friction and allow the blades to strike the tailcone. Also, do not slow or stop the rotors by grabbing the tail rotor. Stopping the tail rotor by hand can damaged the tail rotor drive."