They appear to have a fiberglass skin wrapped over a conventional frame, so they aren't all-molded fiberglass, which is the particular focus of this forum.
Molded fiberglass trailers are made in one or more trailer-sized molds and joined (often fiberglassed together) to form a self-supporting shell. They do not have a structural wood or aluminum frame inside the walls or roof, nor panel seams to develop leaks
The distinction is not obvious from the forum name, but the home page spells it out.
Nice to see other small, lightweight alternatives to giant RVs, though!