Re: It's time...
"it would have been pinged off and destroyed, and the heli would have continued as if nothing had happened."
A chunk knocked off of one of the rotors would have unbalanced them and set off a very uncomfortable vibration which might cause further damage. The cost of replacing and balancing a main rotor is many thousands.
A drone would have to come to contact with the rotor from above though, as it wouldn't get past the downwash any other way.
Most drone / aircraft encounter stories do seem a bit fanciful though.