No peeling on my 2010 Yager. I've only washed it a few times (although I dust it regularly), and it's garaged when parked nearly 100% of the time.
Can you post a picture? I didn't know the headlight had any cover on it, I thought it was just plain glass. I've been looking for an anti-IR coating that won't affect headlight brightness... some sort of clear plastic film that'd diffuse near-IR LiDAR. Now I wonder what sort of film is on there... I'll take a look at mine when I'm down there today changing out the O2 sensor.