Just a weird video. Clearly good enough to reverse launch and handle a big kite with a fresh breeze, but dumps the kite in the drink? I guess to make a point.
I have a fat lady v2, its very good when in the air, but once or twice I dropped it and had to spin it around, and it was very noodlely until I relaunched it. I think they are making these big kites with tubes that are minimal for weight (and aerodynamics too?) for light wind, clearly a weakness when the structure is not properly supported by tensioned up bridle and lines.