Yes.

> This is mostly false. ORMs are far more efficient than most programmers believe. However, ORMs encourage poor practices because of how easy it is to rely on host language logic (i.e., JavaScript or Ruby) to combine data.

The ORM encourages this, unfortunately.

> Now don’t get me wrong, ORMs are not as efficient as raw SQL queries. They are often a bit more inefficient, and in some choice cases, very inefficient.

Maybe a bit pedantic, but this and what's above contradict each other.

The problem is essentially this: you shouldn't use the abstraction until you understand what you're abstracting. But that's not how we write software typically.