I do agree to an extent but the specific point I'm making here is about breaking things in a potentially silent, not obvious way. Not sure what things you are

I do agree to an extent but the specific point I'm making here is about breaking things in a potentially silent, not obvious way. Not sure what things you are referencing here in terms of Apple's breaking API changes but if it's the sort of breaking change where previous code just doesn't compile or run on the new version it's a different matter in my view - as in, it's something far easier to catch in dev or testing and not only affect prod.