This design has a ridge pole. As Brad appears to acknowledge in his article, what happens is, after a foot or so, the area behind the front hoop becomes, in essence, a pup tent shape, just a steep walled triangular A-frrame.
Another thread just started on GEAR has some good insights on how cramped this shape can be. Franco suggested there to make a full size string model of the tent shape to get an idea of just how cramped this can be. Roger commented that there were lots of A-shaped tents around fifty or so years ago. Putting a hoop, or a bowed triangle (Big Agnes) at the front of the A-frame provides a little more space near the door, but not much else.
I think people see the hoop in front, and tend to imagine that the arc continues along the length of the tent. It doesn't, unless there are other hoops along the length, or at least at the rear, and the fabric is tensioned to maintain the Quanset hut shape between the hoops. Roger uses several hoops, Warmlite and many others use just two, or three at the most. Adding a ridge pole destroys the arc over most of the tent's length. Goodbye head and shoulder room.
Another concern is that the 10 and 20 D(denier=thread weight) materials are also pretty new to the market, and there is still not much feedback on how they will stand up, if you want the tent to last for more than a few seasons. Not a deal-breaker necessarily, but something to consider.
Having used 'side-entry' tents (you enter alongside the sleeping area) for a long time, I just could not see myself giving them up to have to crawl into one end of an A-frame, like we did in basic training. With a tunnel, or a solo width dome tent, I might consider an 'end entry', but not with this design. The INSIDE heights at the entry and highest point are not very high, either, and manufacturers often list only the OUTSIDE height without saying so. They also make these tents on the short side. Seven feet of length isn't really seven feet if the fabric slopes sharply inward above the foot end.
Those are the reasons recalled for not liking the tent, and if i had to buy someone else's design would favor one of the side-entry TarpTents or LightHeart Gears. Don't mind stooping, but hate crawling. Probably more hangover from that basic training.