I was going to link the article but now I am unable to find it, but apparently ford was very familiar with the corrosion issues and reached out to alcoa and spent literally millions to perfect the pickling process to ensure this would be a success.
I can only tell you my experiance at my state auction of rot bucket trucks, that the chevys, pre alumimum fords, and dodges are all rotted out. Pre 2015 fords had white paint that would peel by the sheet. Magically the 2015+ aluminum bodys still suffer from frame, brake line, and wiring rot, but the bodys are pristine. White paint still intact in full. Here in pa we pour on the salt by millions and most 7 year trucks are already to be scrapped by their 10th year.
Are they using the liquid stuff where you're at? They use it heavy on the mountain and over the border in Maryland on every road. That stuff eats everything around here.