Many things are not clear, even after watching the video. Looks like not too rigid, and also, I don't see any rudder or footpegs, but this I wouldn't count against it yet. Some boats of that length don't have a rudder, and some are not too rigid. There are other important questions that only users will be able to answer, and only after some period of field trials - design of joints, waterproof closure of the rear deck and perimeter of the coaming/deck closure, centering of the frame in skin, seat comfort and adjustments. And, of course - skin quality. Frame quality is less of a mystery - it looks like carbon composite tubes, material with known advantages and disadvantages compared to aluminum. Btw, I didn't see any seat in the video - can only assume that it is integrated into the cockpit-seasock sub-assembly (and then it has limited adjustment options).
He did assemble it in 7 minutes 40 seconds, but I can't move as fast as him

... Probably, will take 20-25 minutes for most people. With size comparable to FC Kahuna this time would be comparable as well.
And, of course, the trick with seasock serving as a packing bag - well, neat trick, I admit. In reality, with any longterm use, folder needs a designated packing bag (and a good one). Seasock soon wears out even in course of normal use in the boat, - I can only imagine what would happen if I tried and used it as a packing bag for my boats. A designated backpack isn't a problem, of course - though it will add 4 or 5 lbs.