"...how crude these bikes are. Crimped fork ends, stamped steel dropouts, OPC crank, steel rims, stamped steel chain ring, etc."
Does an industrial trike or bike need to have forged drop outs, DB tubing, alloy bits? A resounding "no" is the apparent answer from the customers that purchase them. From first hand experience, Worksman trikes and bikes are tough as nails. What difference does a highly refined work of art rolling on wheels make when it is lugging 150 lbs of tools or parts across a manufacturing plant floor?
The only time I have seen a Worksman trike frame fail was when it was crushed by a hi-lo being irresponsibly driven by a worker.
What counts is durability, affordability, and a easy part procurement when needed. Practicality wins. It is a an industrial service product, right?