If it peels that easily, it will peel when I do not want it to.
When I was considering getting a ICE Jeep Gladiator, I was seriously considering bedlining it inside and out. Cabin, bed, underbody, outside panels... the whole shooting match. I have seen several offroad Jeeps have this done and it saved on rusting and small scratches (the bedliner being much tougher than paint).
But with the CyberTruck's stainless steel, I am not worried about it as much and will live it be for several years and see how it goes.