Only among the inexperienced. Skilled people use both as needed, even at the same time. You can keep the complex SQL in a view and map the view with the ORM. ORM's are far too valuable to ever hand write all that SQL and SQL is far too flexible to ever ORM 100% of every use case, the ORM should make up most of the program with hand written SQL sprinkled in where useful when the ORM is clunky.