...so no evidence then...
Well, actually I had a quick look at FL200 W/Vs in the Afghanistan area using NOAA statistical met in the range 50%-85% for 4 specific dates at 3 monthly intervals. There are many times of year when the W/V is significantly greater than the values the snake-oil gas-baggers are looking at. But hey, let them find that out the hard way if they wish.
green granite, the airship has already been invented, whereas the Wrights were the first to be successful with heavier-than-air flying machines. So your comment is rather irrelevant.
With all their considerable experience, if the folk at Zeppelin NT, Friedrichshafen cannot find a 'killer application' for the airship beyond advertising and (very expensive) joyrides around the Bodensee,
then why should anyone listen to the wild claims of these snake-oil salesmen?