On: Is a Dataframe Just a Table? (2019) [pdf]

[collyw]

What you say is True, but can be solved by an ORM, though that adds an extra layer of complexity

[aeternum → collyw]

It's not just ORM. Many NoSQL databases allow for real-time events (query subscriptions), a simple security model, built-in data versioning, built-in sharding. You rarely get any of that out-of-the-box for a traditional RDS.