The non-Molded FG world doesn't use the term because they mostly aren't aware there's any other way to do it. In their experience, all trailers have studs in the walls.
If you check my posting carefully, you will see that there was no pejoritive in it. I just mentioned the way I think the term is frequently used. As a current owner of a "sticky" who will possibly swap it one of thesed days before long for a molded fiberglass one, I assure that at least one "sticky" owner is aware of them and interested in them!
Seems to me that the real issue is the gargantuan rolling palaces that swoosh past us on the road as they suck down all the oil reserves versus the "small is beautiful" crowd. On our camping trips, we run into many other folks who camp with Sun Finders, Cikira Cruisers, popups, etc, etc. But the mainstream trailering forums and publications generally ignore them---as well as the molded fiberglass ones.
So---no slights intended with my post, and if anyone took exception to it, please accept my apology.