Earlier quoted context omitted.
It's perhaps how some humans code but frankly if you have those people employed to build software for you, you have big problems
That's some idealistic nostalgia. Software is generally poorly built today, and it's evidently not big enough a problem to fix.
That isn't to say software is perfectly built, but it's usually pragmatically built to balance costs of development and correctness - well chosen abstractions let us push up both qualities at once.