I agree: people should know how to swap a full roll of TP for an empty one. But if they don’t, they can adapt to the absence of TP when they need it. The newspaper they were reading while seated on the porcelain throne can be crumpled. It’ll scrape away even the most stubborn dingleberries. They can get once last scraping out of the toothbrush they were about to retire. They can sit on the floor and boot-scoot across the bathroom mat.

In short, no one has failed as a parent if they haven’t taught their kid to replace an empty TP roll. Not if they’ve taught their children those other personal hygiene methods.