All that this does is mean a load of extra weight to drag around. The weight stated in the video is 60lbs (27kg)...my entire kit for a two week camping tour is 13kg. So every hill becomes a misery, and from my experience towing my kids on a Burley trailer it is hard work into the wind.
And what does he gain? There is no wet tent to pack at the end of the day, some nice little boxes to keep his stuff in, no panniers to pack.
But I have never yet got wet in my tent - including a night of torrential rain where a stream formed under my groundsheet.
A trade off between:
a) The misery of dragging lots of stuff, slower harder cycling and the result of less distance compared to
b) The perceived disadvantages of a tent. This is solvable by a decent quality tent, cost £300.
It reminds me of the Victorian explorers carrying round dining tables and pianos.