For Canon, that may be true but there is a lot more to it.I would love 4K raw from the R5, but wouldn't it mean it'd be cropped?
External RAW is often downsampled or even binned.
I was told that it was originally meant to be the RAW readout from the Atomos feed when sent a 4:4:4 signal but Panasonic wanted to push their metadata with the S1H.
Now sometimes it is a RAW sensor readout and other times it is not.
People who apparently never shoot RAW just say, "it shoots RAW" as if REDcode RAW. Cinema DNG, ARRI RAW, BRAW, Canon RAW, and ProRes RAW are anything alike.
ProRes RAW is a lot different for each camera model.