The point of a pleated saddle is more surface area; therefore, if a new design has less surface area it is an indisputable truth that it that is a negative? I don't agree with that. Too much fabric on a pleated saddle can just as easily leave you sitting on the webbing and experiencing pressure points. I went from size 2 flex (old) to a size 1 flex (new) and the size one fit me better and was more comfortable. I am not saying that would be the case for everyone, but it was for me. The only fact there is that the old was larger than the new. The comfort that increase or decrease in fabric provides is subjective, not a fact. The positive or negative the increase or decrease in fabric is is also subjective, not an fact. Your purpose of the pleat saddle is also subjective, not a fact.
You can argue how the forces are concentrated in those areas as well as the extent. There are plenty of factors that effect both i.e. Waist size, butt size, hip size, tether height, bridge length, angle on platform, sitting, leaning etc. Just because a saddle has a certain amount a fabric to distribute the weight across a certain surface area, it doesn't mean it will distribute it over the entire surface area, nor uniformly. For the record I am not saying Boswell is or is not being biased I am only saying that I don't agree with your statements.
The last comment I can agree with. Your body shape, size, and weight combined with how you use the saddle will drive the amount of comfort you find in any given saddle.