Yeah, Because I don't take care of my car.
those who know me know how I keep my stuff pretty tidy.
so before you try to act all high and mighty and better then me (because you "take care of your car better then me") take it as some advice... I've been in the wrap and tint game for a long time, and again... wrapping in the MIDDLE of a spot like that won't cause rust, and depending on the material it should NOT cause it to spread more.. unless you cheaped out on the material and used print vinyl that doesn't breath like 100 percent of auto vinyls.
you had a chip there prior and mazda is known not to have the greatest metals, it rusted over time.. without a wrap it probably would do the exact same thing, regardless of the vinyl.
the only way a wrap shop would cause something to rust is if they are using blades for there cuts against the car and cut through the vinyl, I've seen alot of sketchy shops do this and rust form from it, which I originally thought when I opened this thread! this is not the case, good luck trying to get the wrap shop to pay for the rust repair.