You're overthinking this. It's just an elaborate scam to get some of that Pentagon money.Blackbeard's aerodynamic design does not seem to have the ability to glide and maneuver at hypersonic speeds, I still don't understand how it can achieve this.
They may play with the definition, for example, without any mid-course maneuvering and without considering the terminal maneuverability & speed, it can fly 800 kilometers (still highly questionable claims), and the maneuvering at Mach 5 is just "movable" but there is no substantial change, they just put it all together.