You can say that people should know better but sometimes dead tree maps are not available, and anyway there’s no doubt that they are on the way out. The “safe/reliable” way might even seem to be up for debate, since phones can be more waterproof than paper, less likely to blow away when you’re on top of a mountain, serve as a backup flashlight/emergency comms, etc. But all it takes is a company that decides to force auto update and a PM that decides feature churn increases engagement and creates job security, and who knows what will break?
It is kind of like packaging that’s a choking or asphyxiation hazard.. if you’re doing anything that affects millions of people, it’s almost ALWAYS a safety issue even if you don’t usually think of it that way. No big audience or big user base without big responsibilities. Sure you’ll probably not be held liable in law suits, but on the other hand you should probably feel bad if you’re killing people due to indifference /negligence when thinking through edge cases.