You have a good point overall. However, can you truly reduce the definition of reliable code to something that simple? I think there are a lot more factors that determine if code is reliable or not.
Haha when I was searching for printers across the district network the librarian was looking at my screen. She called me out across the room asking why I was looking at printers at a different school. Oof.
Reminds me of the black words service at apple that checks for explicit or non printer friendly stuff for iPhone engraving. It was hilarious looking at the advanced linguistic engine they developed to filter out asshole and 30+ variations of it with snarky comments added by devs in the past.