>>12071482Not true at all. Gyros count as experimentals, and if they are small enough in weight as categorized the same as Paramotors.
OP, Gyros aren't well known because at the same time of their development the aeroplane became "cheaper" and more easily accessible for the average enthusiast. My old coworker grew up flying them with his father and explained the concept of them to me quite well so I will try and repeat that for you:
The top rotor is not powered by the engine. As the engine behind you pushes you forward, air moves past you and up into the rotors, generating lift. Your lift is determined entirely by forward speed. As such, they are also incredibly safe in an engine out situation, as your altitude is converted from potential energy into kinetic. Your downward speed is as constant as the potential energy reserve is. They take training just like anything else does, but because they are a more uncommon and unique mode of flight the kits are limited to a select few manufactures and can get costly.