I have read on various forums where folks have been stranded or had to limp home in a limited set of gears due to their shifter cables snapping, but not at 22k miles, and certainly have never heard of Porsche recommending replacement at that interval. There are a lot of folks recommending to change out the stock shifter and cables to a brand called Numeric racing which is supposedly a really high quality replacement that gives a rifle bolt action feel. I just don’t see anything really wrong with the stock unit in either my previous 986 or my now 997.
Headlamp surround burning? Never heard of that unless they’re talking about halogen headlamp lenses turning brown due to using the wrong wattage bulb. Sounds like BS to me.