Sure, they're trying to make it cheaper. But all of the eVTOL designs I've seen can't autorotate, making them much less safe (contrary to your implication about redundancy).
Everything I've seen about this space is people with big checks trying to cut corners to enter a new market, and it seems ripe to fail much like the 737-MAX.
https://www.forbes.com/sites/jeremybogaisky/2019/12/01/insid...
And that's ignoring all of the problems with the market itself, not to mention regulations, as well as logistical headaches of transporting between rooftops (which by the way, many cannot safely support landing pads - so now you also have to retrofit skyscrapers with incredibly expensive infrastructure).
To be fair you answered my question and I'm just being belligerent, so thank you for the response.
