Listen, Misha. That's how it is and how it's always been. What you're doing here is creating a double-standard: You are telling some people to ADD polies that will be invisible(building models), and then telling other modelers to REMOVE polies that will be invisible(doodads). That's bad.
And I know for sure that previous mods didn't require such a thing, because Anarchianbedlam wanted me to remove the bottom polies on my crate, but then changed his mind when he realized that terrainers can use upside-down doodads and such.