The "death of the file" is a really mixed bag. The replacement is walled gardens with no privacy, control and perhaps even ownership of your data, questionable security, and the potential that your data could vanish if one is acquires or goes under.
Once we actually replace hierarchical file systems with a different paradigm (like persistent object stores), then we can talk. Right now we live in a world dominated by the hierarchical file system, and this likely won't change soon. Nor am I necessarily advocating one, as none of the alternatives have ever reached usages anywhere near as widespread.
Trying to pretend that fundamental principles of your environment aren't real is an anti-pattern and a recipe for disaster.