It sounds too good to be true, but it's definitely not an actual scam. Their goals may be overly ambitious, time will tell, but the existing manufacturers are using very old technology and that's largely due to the very high cost of certification. Hill is creating almost everything by themselves which seems crazy and would require a million certifications for the HC50 version, but the HX50 is more realistic if it works. And unlike airplanes, there are very few experimental helicopters because the private helicopter market is very small at the moment, so manufacturers have largely ignored it. Robinson is one of the few exceptions.