> My understanding is that those who are, don’t use words as crude as “made” to describe a role in the making of a film.

Oh, no, film insiders use ‘made’ constantly, or even cruder - attribute credit without using a verb at all. Saying it’s a “Nolan film” is super common. Here’s a VFX person saying “Nolan’s CGI”: https://youtu.be/AFLcP-t0-kI (I’m ex-film industry, and still film industry tangential, and found this clip being discussed on a film industry mailing list.)

Film people are far more likely to pay attention to who the director is than non-film people, and it’s very common for film people to talk in terms of directors ‘making’ the film or otherwise casually assign ownership. I think this is especially true for famous directors and good films, and maybe a bit less true for unknown directors and mediocre films.

Somewhat off topic now, but Nolan is fairly famous for being intricately involved with every aspect of the films he directs. He's constantly behind a camera checking out what shots are going to look like, pushing the limits of where you can put an IMAX camera, and coordinating with set builders to do ridiculous stuff like building a reproduction harbour jetty.