The idea of an electric helicopter is laughable; there is a reason why there are literally none, not even proofs of concept. There are electric ultra-efficient airplanes and they have an endurance of one hour at most.
I found the video very interesting and candid and it gave me more confidence that they are actually doing things. He said he expects to have a couple on the floor at the next conference around late spring or summer 2023, but it doesn't sound like they would actually be working prototypes. But who knows.