I've never done any plumbing before
I need to run a water line to my fridge for an ice maker.
This supply is right behind the fridge, but on the other side of a wall.

Is there any reason I shouldn't just run a braided steel line right through the wall? I know that's kinda hacky but the holes would be behind a toilet and behind a fridge so who cares.

Also, please verify that I've ordered the correct parts - more pictures incoming