Hot'n'hi said
Conversely, in an auto where your AoA is almost zero, VNE limitations should be much less critical.
BONG! WRONG! Take off all your clothes.
There is of course an angle of attack, or you wouldn't have any lift, or autorotative force on the blade, and as a result you would drop like a rock at terminal velocity. Go back to your basic books to see the resultant between rotational flow and RoD airflow, now from below, which replaces induced airflow from above.
Vne in an auto is still hugely important, largely because of the huge increase in drag which both slows down the blades and increases RoD.