There's a few problems with that review. It's confusing air speed at a point with volume of air displaced, and assuming that volume at all frequencies is perceptually the same, which it isn't. Psychoacoustically, something with a sound profile at ~80Hz sounds quieter than the same dB noise at 250Hz, which is quieter than at 1000 Hz.
The Dyson fans tend to have a particularly quiet sounding noise profile compared to their volume of air displaced at low to mid power in particular, and also are far quieter and low powers than traditional fans.
They're not worth the money they cost, but there's a lot more nuance than this presents.
The Dyson fans tend to have a particularly quiet sounding noise profile compared to their volume of air displaced at low to mid power in particular, and also are far quieter and low powers than traditional fans.
They're not worth the money they cost, but there's a lot more nuance than this presents.