It's an idea, I guess, to build airports with circular runways. The innovator says that it has several advantages over a straight runway.
I remember studying the history of flight in high school. Early airfields were just that, large flat, grassy areas where the pilot could determine the best azimuth for takeoff or landing. The airplanes weren't restricted to narrow, straight, concrete strips. Circular runways would certainly mitigate the risks of crosswind landings.
I'm no aviator, and the infrastructure costs would be huge, but if you're planning to build your own airport, maybe you should consider a circular runway.