This stuff is pretty standard in heavy industry. Technical office workers (programmers are some of the worst about this) tend to have this idea that everything

This stuff is pretty standard in heavy industry. Technical office workers (programmers are some of the worst about this) tend to have this idea that everything is done consistently and perfectly all the time. In reality everything's done by humans and it isn't done perfectly pretty often. But because the cleanup is also done by humans the failures are mostly handled near where they happen rather than being sent through the system so you don't get failure modes like one piece of software that chokes on a config doesn't bring down a noticeable fraction of the internet.