Indeed, amazing.
But I doubt if the balance is correct. The hulls tend to lean a bit forward. Pitchpoling!
(and the crew look like a group posh chickens)
I can vouch that at least some of the crew are quite experienced sailors and foilers. This is not a low budget or corner-cutting operation. I agree, though, it did seem a little bow-down for a lot of that video but it seemed to slice through the waves while staying on foil.
I think your impression of the people was one they were actively trying to portray (perhaps with a little "tongue in cheek")...a relaxed foiling experience....whether that's reality or not, I guess time will tell.