Just because you have an example of a probably poorly designed, over-engineered system that could be completely replaced with some hand written SQL code, doesn't mean that is the best solution for everything. Come back when you have an example of a system running on top of 500 tables, doing read-writes in a big iron server, communicating with dozens of other servers, that uses distributed caching to improve performance, and that you can explain how you can replace an ORM with SQL.