Actually the Tipi pyramid has been around a lot longer than that, thanks to our aboriginal ancestors in North America.....
Manufacturers of big, burly, heavy 4 season tents will tell you that you need it or you will die in the backcountry. Why? Because they manufacture big, burly, heavy 4 season tents.
I am amazed that ultra long distance hikers like Justin Licthner, Andrew Skurka, and Francis Tapon will hike through horrid winter conditions and make it out just fine. Doing so takes more skill and planning, but isn't this what 'it' is all about?
By the way, Mark Verber's web page is a revalation to most as it breaks down the facts. Nice job Mark - highly recommended.