I think that highlights a broader point that is touched on by the article. The Doom 3 code is not idiomatic C++ the way many would think of it but it does build its own consistent idioms and sticks with them wherever reasonable. It can do this through having a fairly small number of points where it touches the external world and ensuring that its idioms are compatible with that world.
If you're building a program in any language and it interacts heavily with a particular library then you'd better write something idiomatic to that library. If you're going to be using several libraries (including your language's standard lib) with different idioms then one of the most important design decisions you can make is how to bridge them, and where to make compromises.
If you're building a program in any language and it interacts heavily with a particular library then you'd better write something idiomatic to that library. If you're going to be using several libraries (including your language's standard lib) with different idioms then one of the most important design decisions you can make is how to bridge them, and where to make compromises.