“RAW file” makes sense when it’s an actual RAW file. However, raws come in a wide variety of other formats, too. DNG, NEF, X3F, RAF, just to name a few—all of these contain raw image data of some shape or form[0].
This project happens to be dealing not with RAW files, but with RAF files. (Even if it was indeed dealing with RAW files, there would still be a distinction between RAW as a file format and raw photos as a general concept, but we can safely sidestep that can of worms for now.)
[0] In fact, there isn’t even a precise definition or shared spec as to what constitutes a raw photo—it could be literally anything from debayered/denoised/prettified image to straight up sensor number dump in whatever way firmware feels like—which makes capitalising raw, as if it’s a specific thing, doubly silly when you’re not talking about a specific format.
