The DEF hoses are hanging there waiting to be grabbed by brush. The injectors are delicate and waiting to be hit by rocks, ice, water, brush, whatever. The skid plates do not protect any of it. I am very glad I recognized this before I broke something. I added an expanded steel screen over the hoses and injectors (see the link below).
Service DEF - See Dealer
I have a 1995 Grand Cherokee that I have ultimate confidence in taking nearly anywhere: brush, rocks, ice, snow, water... My plan was to do the same with the new vehicle. However, I am very concerned that something will break or cause the vehicle to go into limp mode or some form of lockout. Very disappointing.