He incorrectly claims that a cyclist can get more torque by having a crank arm that’s “longer” but bends back towards the center, keeping the pedals the same distance away from the axis as a traditional straight crank. Levers don’t work like that. It doesn’t matter what shape the lever arm is, it only matters how far away the pedal is from the center of rotation.
Good to note that the Kickstarter attempt failed miserably, not so good that there’s a smaller-scale attempt elsewhere.