The larger RC helicopters here on earth spin about the same speed.
They have blades that are narrower in chord, but that's because of the thicker atmosphere.
Ingenuity's blades are shaped more like propellers than typical helicopter rotor blades because they would get more 'bite' in the Mars atmosphere.
yeah ive seen the nitro-powered ones in action and they spin pretty fast.
the context was 2400 rpm with those particular blades