Interesting parallel from shooting a rifle offhand (NRA style) with irons vs a magnifying scope. The scope shows you everything about your hold and trigger control that you couldn't see without that magnification.
But if you're shooting mid 190s offhand with irons, why is all of a sudden all that movement (that was always there but you couldn't see) a bad thing?
It's not.
The results on target, not what you can see through different sights, are what define how good your trigger control (or any other technical element) is.