I work at a ford dealer, in the last month we have had three hybrids have the dash removed because of bad wiring, full replacement is happening, plus the damage to vehicle is crazy.
I have a 2025 xlt ecoboost with 13,000 km on it, zero issues so far and gets great gas milage
Maybe at some but I’ve been doing this for years as a detailer. Not a lot guy. And you know nothing about the systems. You think they stay dry in the rain? Why do u think it gets dirty in the first place
check Glass Polish shop to get glass polish to remove the stains, its super easy to do, you can get some pads that go on a drill, just don't get it too hot as you will break the glass
https://glasspolishshop.com/glass-restoration/glass-polishing-kits/windscreen-polishing-kit-do-it-yourself