It will leave from a terminal, not from where you are. It will arrive at a terminal, not your destination. It will go on a schedule, not when you're ready. It will be a lot more expensive than a bus ticket. It won't work in bad weather. There will be TSA (unless we come to our senses before 2026).
It's not an inherently bad idea, but who is it for? Who'll be willing to pay the fare? Who has a 2 hour commute?
Are they going to swap out the battery with a charged one for the return trip? And why are they saying it will be quiet? Are helicopters loud because of combustion, or because the blades disturb the air?