I really don't see how this post supports the one before it. Much of the complexity here can and in many, perhaps most, cases should be abstracted into a librar

I really don't see how this post supports the one before it. Much of the complexity here can and in many, perhaps most, cases should be abstracted into a library, whether that is the standard library or a well-established high-quality third-party library. Given how easy it is to make mistakes, common operations, like atomically writing a buffer to a file, or creating a new file and ensuring it didn't already exist should not have to be re-implemented in every application.