I definitely agree with you in regards to the "everything is a text file" thing, but the average computer user doesn't know how to properly utilise text files and manage them effectively.

This is similar to the fact that basic knowledge of file systems and file formats is lacking in many modern teenagers, because this is all abstracted away by smartphone apps and cloud storage.

As a tech guy, I'd love to run the crematorium using YAML files in GitHub, but the reality is that the target audience for the system is Funeral Directors and Cremation Assistants, so it needs to be a non-technical user interface.