You are right. I even though of ordering the blue light one once and not connecting the wires.
That's why we don't have (at least where I live) these door sills without the light, so to get this design, you must order the light version.
So, either you get a fancy sticker kind of door sill (without light, sure), or the same model as yours, lighted.
Some time ago I was trying to get the blue ambient light (honda OEM) and the sills to match, but everything would go for ~$700 (expensive accessories here), and I gave up at the end...
Honestly, my wife still couldn't understand why I would spend ~700$ to light a minimal blue led inside the car ahhahah I didn't!