Your appeal to authority doesn’t impress me. Just because something is technically possible, doesn’t necessarily make it economically viable. As an example, a lot of very brilliant engineers have worked very hard to make flying cars happen, yet no more than a handful have every been produced. I’d be willing to bet the farm on that Switchblade thing being vaporware, too.
At best, electric aircraft are going to remain extremely niche unless something truly drastic happens with the energy density of the power supply.