I suspect it's more that maintaining a 10+ year testing matrix across three architectures and like 15 product families is pretty un-manageable.
The cross product matrix is already staggering, but imagine testing 10 years of iPhones, 10 years of iPods, however many years of Watch, AirPods, chargers, etc against every Mac released for 10 years - in every configuration? Every time you ship an OS update? Wild.
The cross product matrix is already staggering, but imagine testing 10 years of iPhones, 10 years of iPods, however many years of Watch, AirPods, chargers, etc against every Mac released for 10 years - in every configuration? Every time you ship an OS update? Wild.