There’s probably not a wrapped AB airplane with enough time to develop corrosion but here’s my thoughts in random order.
The airlines put vinyl on their jets do they not?
I have one flush screw that I suspect is slightly loose where the vinyl has identified it by cracking all the way around the screw.
The vinyl is very tight allowing little room for moisture to collect and is very tight. Remember, this new vinyl goes on dry, unlike former products. I think I could see an imperfection (corrosion) below it.
Our airplanes spend a lot of time in hangars. Things might be different if exposed to the elements every day.
If in doubt, peel some off, have a look, replace. Try that with paint.
Not perfect but still better than paint in my opinion. 2.5 years and 165 hrs.