Has anyone correlated the perch problem with cars exposed to winter roads or damp conditions?

My car is located in Central Fl, always garaged ( ie no AM dew) never been in winter road conditions. I checked the perches in detail (with a friends ultrasound and mine are fine with no gross stress cracks (that could cause failure) with 105k miles on the car.

Also, I have absolutely no evidence of body rust.

Is it possible that the 210 has less or inadequate rust prevention on the metal than previous models? I noticed some 210's have a lot of rust dots on the painted metal areas around the front heaadlightsl.

This model could not be any worst than a Diesel Peugeot 504 I owned in the 70's. bought it new in White. In two years the rocker panels and wheel wells turned Orange. This was my poor mans MB Diesel. Great rider and dependable, but could not handle winter road treatments.