I haven't compared the noise my Air 3 makes with other drones, but it seems rather quiet to me except up close, at launch. Of course, I'm an old geezer, and my hearing "ain't what it used to was."
I'd imagine that noise relates to the amount...
I've seen a linear improvement in sound levels going from the Phantom 4 Pro, Mavic 2 Pro, Mavic 3 Pro and now the Mavic 4 pro. If I don't waste time ascending to altitude, then there's very little chance of bothering anyone.