Thank you for that link, it is more in depth than the OP and talks about noise pollution:

"He said that the ambition for an app-based on demand service would not mean “landing in every garden... You’d be working with regulation around the world, integrating with public transport systems where they have them. We’re coming at a respectful way of thinking how people live, how we create corridors and not just fill the skies with these things.”"

Not often, but I don't enjoy it when it happens; they're very loud. "Less loud than a helicopter" isn't much consolation. Noise pollution will definitely need to be taken into consideration before people start taking mini-choppers in place of Uber/Lyft.

It doesn't really make sense to call it a case of NIMBY because noise pollution is a real issue. This isn't a matter of them looking ugly; we do have to be able to sleep. If it's significantly louder than a train, that might be a bit too much.

Growing up on a street where the neighbors landed a helicopter at their house a few times per month I can tell you it’s extremely disruptive. As a kid you think it’s fun, I’m sure my dad was annoyed when he was trying to hear the tv though.