In orgs where this need is usually present, the data can be massive and it takes some time to understand how it all fits together. There is also the issue of optimizing around indexes or writing queries that are cost efficient (especially if you using Athena/Presto/Big Query). Mistakes here can cost a lot of money or lock up the system so others can't use it.

I love this demo, but I feel like it would be better with a human in the loop because these edge cases can be so severe.