Could there be a chance that a screw or nail get poked into the supply lines running them so close to the wall ? Maybe not be in spot where that could happen anyway.
There's always that chance. Normally you put metal plates on the 2x4s when you put pipes in like that, sometimes for wiring too. Obviosuly, that would be hard to do in this instance. Thsoe maybe outside walls so maybe nothing should ever get nailed to it???
My dad was putting baseboards in my sister's house years ago, drove a #8 finish nail right through a copper pipe for bathrooom that was on other side of wall.