That is weird, the ‘bpy.ops.transform.resize(value=… ‘ hasn’t changed; when you say: value=(10, 10,10) it scales (whatever is selected) uniformly by a factor 10.
You want to make the UV Faces so small that they have the size of 1 pixel or less on the Image you are using, so they have to be scaled down, therefore 0.001 is a good (on the very safe side…) value.
