Hierarchy != graph (although it can) There are always better tools but that doesn't mean that it is "wrong". For example, S3 is generally a better tool than Po

Hierarchy != graph (although it can) There are always better tools but that doesn't mean that it is "wrong". For example, S3 is generally a better tool than Postgres for storing files but there are several legitimate use cases where storing the files in the DB is better than S3.