As a 15,000 hour helicopter pilot, with an additional 5,000 fixed wing hours, I can tell you that a drone could easily cause that damage. During my time in the saddle, I've had birds fly into the rotor system, bending control tubes, birds flying into the windshield and ending up in my lap, etc. One of the examples shown in an earlier post involved a Sikorsky S-76 that took a bird through a plastic windshield (the original windshields are glass), causing the accident that killed all on board. That bird could not have impacted in a more catastrophic way, coming through the windshield and taking both engine throttles to idle, sealing the crew's fate.
I hope this incident is solved quickly. We certainly don't need a knee jerk reaction to this, with more regulations destroying our freedoms as drone pilots.