This is an interesting use and I like the idea, but I don't think it makes him wrong. You don't actually need an ORM to do this. The same logic could be applied

This is an interesting use and I like the idea, but I don't think it makes him wrong. You don't actually need an ORM to do this. The same logic could be applied to data sets retrieved through regular queries. Or you could create views/stored procedures with the same logic.