It’s not rolling shutter artifacts, you can see the one blade is bent in the same direction as it spins, unlike rolling shutter which makes most of the blades a

It’s not rolling shutter artifacts, you can see the one blade is bent in the same direction as it spins, unlike rolling shutter which makes most of the blades appears to bend towards the same direction regardless of which angle the propeller’s at. (Probably not the clearest explanation, but still doesn’t look like rolling shutter.)