Such simple hardware is typically manufactured in China right along with the rest of the mechanism.
The nicer designs are still under patent, and the Chinese cannot successfully export them into first world markets.
In the third world, generally, there is great poverty...
Meaning that the 'tradesman' is often an uneducated bloke with one plier and one screw-driver -- straight blade -- and the export manufacturer dumbs down his fasteners so that his product has universal installation appeal.
The feelings of trade sophisticates are of no concern. You're not the guys holding the buying pencil.
