Your arguments are invalid
Not all latex weapons are the same - this I can say for a fact from experience, and from talking to people who make their own. The processes, quality of the latex [and other materials used - resins, paints, etc], the quality of the construction, etc, varies.
Without any definition, "high quality" is just arbitrary and meaningless. An analogy: its like those guys who sell "metal" DDR pads that include what they call "touch sensitive technology" - a meaningless term used to cover that they use the same crappy tech - that is nothing more than sheet metal and a poorly made contact with even crappeir quality copper wiring - that other manufacturers that aren't MyMyBox or Cobalt Flux use.